Commit Graph

11133 Commits

Author SHA1 Message Date
Taehee Yoo
eec8359f07 net: ethtool: add support for configuring hds-thresh
The hds-thresh option configures the threshold value of
the header-data-split.
If a received packet size is larger than this threshold value, a packet
will be split into header and payload.
The header indicates TCP and UDP header, but it depends on driver spec.
The bnxt_en driver supports HDS(Header-Data-Split) configuration at
FW level, affecting TCP and UDP too.
So, If hds-thresh is set, it affects UDP and TCP packets.

Example:
   # ethtool -G <interface name> hds-thresh <value>

   # ethtool -G enp14s0f0np0 tcp-data-split on hds-thresh 256
   # ethtool -g enp14s0f0np0
   Ring parameters for enp14s0f0np0:
   Pre-set maximums:
   ...
   HDS thresh:  1023
   Current hardware settings:
   ...
   TCP data split:         on
   HDS thresh:  256

The default/min/max values are not defined in the ethtool so the drivers
should define themself.
The 0 value means that all TCP/UDP packets' header and payload
will be split.

Tested-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20250114142852.3364986-3-ap420073@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-15 14:42:11 -08:00
Eric Dumazet
d16b344790 tcp: add LINUX_MIB_PAWS_OLD_ACK SNMP counter
Prior patch in the series added TCP_RFC7323_PAWS_ACK drop reason.

This patch adds the corresponding SNMP counter, for folks
using nstat instead of tracing for TCP diagnostics.

nstat -az | grep PAWSOldAck

Suggested-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Tested-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250113135558.3180360-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-14 13:28:13 -08:00
Paolo Abeni
624d7a8a9d netfilter pull request 25-01-11
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Merge tag 'nf-next-25-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next

Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains a small batch of Netfilter/IPVS updates
for net-next:

1) Remove unused genmask parameter in nf_tables_addchain()

2) Speed up reads from /proc/net/ip_vs_conn, from Florian Westphal.

3) Skip empty buckets in hashlimit to avoid atomic operations that results
   in false positive reports by syzbot with lockdep enabled, patch from
   Eric Dumazet.

4) Add conntrack event timestamps available via ctnetlink,
   from Florian Westphal.

netfilter pull request 25-01-11

* tag 'nf-next-25-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next:
  netfilter: conntrack: add conntrack event timestamp
  netfilter: xt_hashlimit: htable_selective_cleanup() optimization
  ipvs: speed up reads from ip_vs_conn proc file
  netfilter: nf_tables: remove the genmask parameter
====================

Link: https://patch.msgid.link/20250111230800.67349-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-01-14 12:08:24 +01:00
Jakub Kicinski
6167c0b6e8 net: ethtool: add support for structured PHY statistics
Introduce a new way to report PHY statistics in a structured and
standardized format using the netlink API. This new method does not
replace the old driver-specific stats, which can still be accessed with
`ethtool -S <eth name>`. The structured stats are available with
`ethtool -S <eth name> --all-groups`.

This new method makes it easier to diagnose problems by organizing stats
in a consistent and documented way.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-01-14 11:44:19 +01:00
David S. Miller
7b24f164cf ipsec-next-2025-01-09
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Merge tag 'ipsec-next-2025-01-09' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next

Steffen Klassert says:

====================
ipsec-next-2025-01-09

1) Implement the AGGFRAG protocol and basic IP-TFS (RFC9347) functionality.
   From Christian Hopps.

2) Support ESN context update to hardware for TX.
   From Jianbo Liu.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2025-01-10 09:15:17 +00:00
Florian Westphal
601731fc7c netfilter: conntrack: add conntrack event timestamp
Nadia Pinaeva writes:
  I am working on a tool that allows collecting network performance
  metrics by using conntrack events.
  Start time of a conntrack entry is used to evaluate seen_reply
  latency, therefore the sooner it is timestamped, the better the
  precision is.
  In particular, when using this tool to compare the performance of the
  same feature implemented using iptables/nftables/OVS it is crucial
  to have the entry timestamped earlier to see any difference.

At this time, conntrack events can only get timestamped at recv time in
userspace, so there can be some delay between the event being generated
and the userspace process consuming the message.

There is sys/net/netfilter/nf_conntrack_timestamp, which adds a
64bit timestamp (ns resolution) that records start and stop times,
but its not suited for this either, start time is the 'hashtable insertion
time', not 'conntrack allocation time'.

There is concern that moving the start-time moment to conntrack
allocation will add overhead in case of flooding, where conntrack
entries are allocated and released right away without getting inserted
into the hashtable.

Also, even if this was changed it would not with events other than
new (start time) and destroy (stop time).

Pablo suggested to add new CTA_TIMESTAMP_EVENT, this adds this feature.
The timestamp is recorded in case both events are requested and the
sys/net/netfilter/nf_conntrack_timestamp toggle is enabled.

Reported-by: Nadia Pinaeva <n.m.pinaeva@gmail.com>
Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2025-01-09 14:42:16 +01:00
Yuyang Huang
33d97a07b3 netlink: add IPv6 anycast join/leave notifications
This change introduces a mechanism for notifying userspace
applications about changes to IPv6 anycast addresses via netlink. It
includes:

* Addition and deletion of IPv6 anycast addresses are reported using
  RTM_NEWANYCAST and RTM_DELANYCAST.
* A new netlink group (RTNLGRP_IPV6_ACADDR) for subscribing to these
  notifications.

This enables user space applications(e.g. ip monitor) to efficiently
track anycast addresses through netlink messages, improving metrics
collection and system monitoring. It also unlocks the potential for
advanced anycast management in user space, such as hardware offload
control and fine grained network control.

Cc: Maciej Żenczykowski <maze@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Yuyang Huang <yuyanghuang@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250107114355.1766086-1-yuyanghuang@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-01-09 12:54:45 +01:00
Jakub Kicinski
a8a6531164 bpf-next-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2025-01-07

We've added 7 non-merge commits during the last 32 day(s) which contain
a total of 11 files changed, 190 insertions(+), 103 deletions(-).

The main changes are:

1) Migrate the test_xdp_meta.sh BPF selftest into test_progs
   framework, from Bastien Curutchet.

2) Add ability to configure head/tailroom for netkit devices,
   from Daniel Borkmann.

3) Fixes and improvements to the xdp_hw_metadata selftest,
   from Song Yoong Siang.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next:
  selftests/bpf: Extend netkit tests to validate set {head,tail}room
  netkit: Add add netkit {head,tail}room to rt_link.yaml
  netkit: Allow for configuring needed_{head,tail}room
  selftests/bpf: Migrate test_xdp_meta.sh into xdp_context_test_run.c
  selftests/bpf: test_xdp_meta: Rename BPF sections
  selftests/bpf: Enable Tx hwtstamp in xdp_hw_metadata
  selftests/bpf: Actuate tx_metadata_len in xdp_hw_metadata
====================

Link: https://patch.msgid.link/20250107130908.143644-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-07 15:39:09 -08:00
Daniel Borkmann
b9ed315d3c netkit: Allow for configuring needed_{head,tail}room
Allow the user to configure needed_{head,tail}room for both netkit
devices. The idea is similar to 163e529200af ("veth: implement
ndo_set_rx_headroom") with the difference that the two parameters
can be specified upon device creation. By default the current behavior
stays as is which is needed_{head,tail}room is 0.

In case of Cilium, for example, the netkit devices are not enslaved
into a bridge or openvswitch device (rather, BPF-based redirection
is used out of tcx), and as such these parameters are not propagated
into the Pod's netns via peer device.

Given Cilium can run in vxlan/geneve tunneling mode (needed_headroom)
and/or be used in combination with WireGuard (needed_{head,tail}room),
allow the Cilium CNI plugin to specify these two upon netkit device
creation.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/bpf/20241220234658.490686-1-daniel@iogearbox.net
2025-01-06 09:48:49 +01:00
Jakub Kicinski
385f186aba Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc6).

No conflicts.

Adjacent changes:

include/linux/if_vlan.h
  f91a5b808938 ("af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK")
  3f330db30638 ("net: reformat kdoc return statements")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-03 16:29:29 -08:00
Linus Torvalds
aba74e639f Nothing major here. Over the last two weeks we gathered only around
two-thirds of our normal weekly fix count, but delaying sending these
 until -rc7 seemed like a really bad idea.
 
 AFAIK we have no bugs under investigation. One or two reverts for
 stuff for which we haven't gotten a proper fix will likely come in
 the next PR.
 
 Including fixes from wireles and netfilter.
 
 Current release - fix to a fix:
 
  - netfilter: nft_set_hash: unaligned atomic read on struct nft_set_ext
 
  - eth: gve: trigger RX NAPI instead of TX NAPI in gve_xsk_wakeup
 
 Previous releases - regressions:
 
  - net: reenable NETIF_F_IPV6_CSUM offload for BIG TCP packets
 
  - mptcp:
    - fix sleeping rcvmsg sleeping forever after bad recvbuffer adjust
    - fix TCP options overflow
    - prevent excessive coalescing on receive, fix throughput
 
  - net: fix memory leak in tcp_conn_request() if map insertion fails
 
  - wifi: cw1200: fix potential NULL dereference after conversion
    to GPIO descriptors
 
  - phy: micrel: dynamically control external clock of KSZ PHY,
    fix suspend behavior
 
 Previous releases - always broken:
 
  - af_packet: fix VLAN handling with MSG_PEEK
 
  - net: restrict SO_REUSEPORT to inet sockets
 
  - netdev-genl: avoid empty messages in NAPI get
 
  - dsa: microchip: fix set_ageing_time function on KSZ9477 and LAN937X
 
  - eth: gve: XDP fixes around transmit, queue wakeup etc.
 
  - eth: ti: icssg-prueth: fix firmware load sequence to prevent time
    jump which breaks timesync related operations
 
 Misc:
 
  - netlink: specs: mptcp: add missing attr and improve documentation
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from wireles and netfilter.

  Nothing major here. Over the last two weeks we gathered only around
  two-thirds of our normal weekly fix count, but delaying sending these
  until -rc7 seemed like a really bad idea.

  AFAIK we have no bugs under investigation. One or two reverts for
  stuff for which we haven't gotten a proper fix will likely come in the
  next PR.

  Current release - fix to a fix:

   - netfilter: nft_set_hash: unaligned atomic read on struct
     nft_set_ext

   - eth: gve: trigger RX NAPI instead of TX NAPI in gve_xsk_wakeup

  Previous releases - regressions:

   - net: reenable NETIF_F_IPV6_CSUM offload for BIG TCP packets

   - mptcp:
      - fix sleeping rcvmsg sleeping forever after bad recvbuffer adjust
      - fix TCP options overflow
      - prevent excessive coalescing on receive, fix throughput

   - net: fix memory leak in tcp_conn_request() if map insertion fails

   - wifi: cw1200: fix potential NULL dereference after conversion to
     GPIO descriptors

   - phy: micrel: dynamically control external clock of KSZ PHY, fix
     suspend behavior

  Previous releases - always broken:

   - af_packet: fix VLAN handling with MSG_PEEK

   - net: restrict SO_REUSEPORT to inet sockets

   - netdev-genl: avoid empty messages in NAPI get

   - dsa: microchip: fix set_ageing_time function on KSZ9477 and LAN937X

   - eth:
      - gve: XDP fixes around transmit, queue wakeup etc.
      - ti: icssg-prueth: fix firmware load sequence to prevent time
        jump which breaks timesync related operations

  Misc:

   - netlink: specs: mptcp: add missing attr and improve documentation"

* tag 'net-6.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits)
  net: ti: icssg-prueth: Fix clearing of IEP_CMP_CFG registers during iep_init
  net: ti: icssg-prueth: Fix firmware load sequence.
  mptcp: prevent excessive coalescing on receive
  mptcp: don't always assume copied data in mptcp_cleanup_rbuf()
  mptcp: fix recvbuffer adjust on sleeping rcvmsg
  ila: serialize calls to nf_register_net_hooks()
  af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK
  af_packet: fix vlan_get_tci() vs MSG_PEEK
  net: wwan: iosm: Properly check for valid exec stage in ipc_mmio_init()
  net: restrict SO_REUSEPORT to inet sockets
  net: reenable NETIF_F_IPV6_CSUM offload for BIG TCP packets
  net: sfc: Correct key_len for efx_tc_ct_zone_ht_params
  net: wwan: t7xx: Fix FSM command timeout issue
  sky2: Add device ID 11ab:4373 for Marvell 88E8075
  mptcp: fix TCP options overflow.
  net: mv643xx_eth: fix an OF node reference leak
  gve: trigger RX NAPI instead of TX NAPI in gve_xsk_wakeup
  eth: bcmsysport: fix call balance of priv->clk handling routines
  net: llc: reset skb->transport_header
  netlink: specs: mptcp: fix missing doc
  ...
2025-01-03 14:36:54 -08:00
Matthieu Baerts (NGI0)
bea87657b5 netlink: specs: mptcp: clearly mention attributes
The rendered version of the MPTCP events [1] looked strange, because the
whole content of the 'doc' was displayed in the same block.

It was then not clear that the first words, not even ended by a period,
were the attributes that are defined when such events are emitted. These
attributes have now been moved to the end, prefixed by 'Attributes:' and
ended with a period. Note that '>-' has been added after 'doc:' to allow
':' in the text below.

The documentation in the UAPI header has been auto-generated by:

  ./tools/net/ynl/ynl-regen.sh

Link: https://docs.kernel.org/networking/netlink_spec/mptcp_pm.html#event-type [1]
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241221-net-mptcp-netlink-specs-pm-doc-fixes-v2-2-e54f2db3f844@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-27 11:16:21 -08:00
Matthieu Baerts (NGI0)
6b830c6a02 netlink: specs: mptcp: add missing 'server-side' attr
This attribute is added with the 'created' and 'established' events, but
the documentation didn't mention it.

The documentation in the UAPI header has been auto-generated by:

  ./tools/net/ynl/ynl-regen.sh

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241221-net-mptcp-netlink-specs-pm-doc-fixes-v2-1-e54f2db3f844@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-27 11:16:21 -08:00
Linus Torvalds
f0bc704f46 hardening fix for v6.13-rc5
- stddef: make __struct_group() UAPI C++-friendly (Alexander Lobakin)
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Merge tag 'hardening-v6.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fix from Kees Cook:

 - stddef: make __struct_group() UAPI C++-friendly (Alexander Lobakin)

* tag 'hardening-v6.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  stddef: make __struct_group() UAPI C++-friendly
2024-12-27 10:39:05 -08:00
Alexander Lobakin
724c6ce38b stddef: make __struct_group() UAPI C++-friendly
For the most part of the C++ history, it couldn't have type
declarations inside anonymous unions for different reasons. At the
same time, __struct_group() relies on the latters, so when the @TAG
argument is not empty, C++ code doesn't want to build (even under
`extern "C"`):

../linux/include/uapi/linux/pkt_cls.h:25:24: error:
'struct tc_u32_sel::<unnamed union>::tc_u32_sel_hdr,' invalid;
an anonymous union may only have public non-static data members
[-fpermissive]

The safest way to fix this without trying to switch standards (which
is impossible in UAPI anyway) etc., is to disable tag declaration
for that language. This won't break anything since for now it's not
buildable at all.
Use a separate definition for __struct_group() when __cplusplus is
defined to mitigate the error, including the version from tools/.

Fixes: 50d7bd38c3aa ("stddef: Introduce struct_group() helper macro")
Reported-by: Christopher Ferris <cferris@google.com>
Closes: https://lore.kernel.org/linux-hardening/Z1HZpe3WE5As8UAz@google.com
Suggested-by: Kees Cook <kees@kernel.org> # __struct_group_tag()
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20241219135734.2130002-1-aleksander.lobakin@intel.com
Signed-off-by: Kees Cook <kees@kernel.org>
2024-12-20 09:05:53 -08:00
Ido Schimmel
ba4138032a ipv6: Add flow label to route get requests
The default IPv6 multipath hash policy takes the flow label into account
when calculating a multipath hash and previous patches added a flow
label selector to IPv6 FIB rules.

Allow user space to specify a flow label in route get requests by adding
a new netlink attribute and using its value to populate the "flowlabel"
field in the IPv6 flow info structure prior to a route lookup.

Deny the attribute in RTM_{NEW,DEL}ROUTE requests by checking for it in
rtm_to_fib6_config() and returning an error if present.

A subsequent patch will use this capability to test the new flow label
selector in IPv6 FIB rules.

Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-12-19 16:02:22 +01:00
Ido Schimmel
d1d761b301 net: fib_rules: Add flow label selector attributes
Add new FIB rule attributes which will allow user space to match on the
IPv6 flow label with a mask. Temporarily set the type of the attributes
to 'NLA_REJECT' while support is being added in the IPv6 code.

Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-12-19 16:02:21 +01:00
Daniel Lezcano
65c8c78cc7 thermal/thresholds: Fix uapi header macros leading to a compilation error
The macros giving the direction of the crossing thresholds use the BIT
macro which is not exported to the userspace. Consequently when an
userspace program includes the header, it fails to compile.

Replace the macros by their litteral to allow the compilation of
userspace program using this header.

Fixes: 445936f9e258 ("thermal: core: Add user thresholds support")
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://patch.msgid.link/20241212201311.4143196-1-daniel.lezcano@linaro.org
[ rjw: Add Fixes: ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-12-16 21:30:20 +01:00
Kory Maincent
6e9e2eed4f net: ethtool: Add support for tsconfig command to get/set hwtstamp config
Introduce support for ETHTOOL_MSG_TSCONFIG_GET/SET ethtool netlink socket
to read and configure hwtstamp configuration of a PHC provider. Note that
simultaneous hwtstamp isn't supported; configuring a new one disables the
previous setting.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-16 12:51:41 +00:00
Kory Maincent
b9e3f7dc9e net: ethtool: tsinfo: Enhance tsinfo to support several hwtstamp by net topology
Either the MAC or the PHY can provide hwtstamp, so we should be able to
read the tsinfo for any hwtstamp provider.

Enhance 'get' command to retrieve tsinfo of hwtstamp providers within a
network topology.

Add support for a specific dump command to retrieve all hwtstamp
providers within the network topology, with added functionality for
filtered dump to target a single interface.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-16 12:51:41 +00:00
Kory Maincent
35f7cad174 net: Add the possibility to support a selected hwtstamp in netdevice
Introduce the description of a hwtstamp provider, mainly defined with a
the hwtstamp source and the phydev pointer.

Add a hwtstamp provider description within the netdev structure to
allow saving the hwtstamp we want to use. This prepares for future
support of an ethtool netlink command to select the desired hwtstamp
provider. By default, the old API that does not support hwtstamp
selectability is used, meaning the hwtstamp provider pointer is unset.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-16 12:51:40 +00:00
Sabrina Dubroca
510128b30f tls: add counters for rekey
This introduces 5 counters to keep track of key updates:
Tls{Rx,Tx}Rekey{Ok,Error} and TlsRxRekeyReceived.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-16 12:47:30 +00:00
Yuyang Huang
2c2b61d213 netlink: add IGMP/MLD join/leave notifications
This change introduces netlink notifications for multicast address
changes. The following features are included:
* Addition and deletion of multicast addresses are reported using
  RTM_NEWMULTICAST and RTM_DELMULTICAST messages with AF_INET and
  AF_INET6.
* Two new notification groups: RTNLGRP_IPV4_MCADDR and
  RTNLGRP_IPV6_MCADDR are introduced for receiving these events.

This change allows user space applications (e.g., ip monitor) to
efficiently track multicast group memberships by listening for netlink
events. Previously, applications relied on inefficient polling of
procfs, introducing delays. With netlink notifications, applications
receive realtime updates on multicast group membership changes,
enabling more precise metrics collection and system monitoring. 

This change also unlocks the potential for implementing a wide range
of sophisticated multicast related features in user space by allowing
applications to combine kernel provided multicast address information
with user space data and communicate decisions back to the kernel for
more fine grained control. This mechanism can be used for various
purposes, including multicast filtering, IGMP/MLD offload, and
IGMP/MLD snooping.

Cc: Maciej Żenczykowski <maze@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Co-developed-by: Patrick Ruddy <pruddy@vyatta.att-mail.com>
Signed-off-by: Patrick Ruddy <pruddy@vyatta.att-mail.com>
Link: https://lore.kernel.org/r/20180906091056.21109-1-pruddy@vyatta.att-mail.com
Signed-off-by: Yuyang Huang <yuyanghuang@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-12-15 12:31:35 +00:00
Jakub Kicinski
5098462fba Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc3).

No conflicts or adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-12 14:19:05 -08:00
Petr Machata
6c11379b10 vxlan: Add an attribute to make VXLAN header validation configurable
The set of bits that the VXLAN netdevice currently considers reserved is
defined by the features enabled at the netdevice construction. In order to
make this configurable, add an attribute, IFLA_VXLAN_RESERVED_BITS. The
payload is a pair of big-endian u32's covering the VXLAN header. This is
validated against the set of flags used by the various enabled VXLAN
features, and attempts to override bits used by an enabled feature are
bounced.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/c657275e5ceed301e62c69fe8e559e32909442e2.1733412063.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-09 14:47:05 -08:00
Stanislav Fomichev
8d0580c6eb ethtool: regenerate uapi header from the spec
No functional changes. Mostly the following formatting:
- extra docs
- extra enums
- XXX_MAX = __XXX_CNT - 1 -> XXX_MAX = (__XXX_CNT - 1)
- newlines

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241204155549.641348-9-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05 12:03:05 -08:00
Stanislav Fomichev
dd7cde36de ethtool: remove the comments that are not gonna be generated
Cleanup the header manually to make it easier to review the changes that ynl
generator brings in. No functional changes.

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241204155549.641348-8-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05 12:03:04 -08:00
Stanislav Fomichev
49922401c2 ethtool: separate definitions that are gonna be generated
Reshuffle definitions that are gonna be generated into
ethtool_netlink_generated.h and match ynl spec order.
This should make it easier to compare the output of the ynl-gen-c
to the existing uapi header. No functional changes.

Things that are still remaining to be manually defined:
- ETHTOOL_FLAG_ALL - probably no good way to add to spec?
- some of the cable test bits (not sure whether it's possible to move to
  spec)
- some of the stats definitions (no way currently to move to spec)

Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241204155549.641348-7-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05 12:03:04 -08:00
Christian Hopps
d1716d5a44 xfrm: add generic iptfs defines and functionality
Define `XFRM_MODE_IPTFS` and `IPSEC_MODE_IPTFS` constants, and add these to
switch case and conditionals adjacent with the existing TUNNEL modes.

Signed-off-by: Christian Hopps <chopps@labn.net>
Tested-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-12-05 10:01:28 +01:00
Christian Hopps
f69eb4f65c xfrm: netlink: add config (netlink) options
Add netlink options for configuring IP-TFS SAs.

Signed-off-by: Christian Hopps <chopps@labn.net>
Tested-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-12-05 10:01:15 +01:00
Christian Hopps
64e844505b include: uapi: protocol number and packet structs for AGGFRAG in ESP
Add the RFC assigned IP protocol number for AGGFRAG.
Add the on-wire basic and congestion-control IP-TFS packet headers.

Signed-off-by: Christian Hopps <chopps@labn.net>
Tested-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-12-05 10:01:09 +01:00
Jason Gunthorpe
2ca704f55e iommu/arm-smmu-v3: Improve uAPI comment for IOMMU_HW_INFO_TYPE_ARM_SMMUV3
Be specific about what fields should be accessed in the idr result and
give other guidance to the VMM on how it should generate the
vIDR. Discussion on the list, and review of the qemu implementation
understood this needs to be clearer and more detailed.

Link: https://patch.msgid.link/r/0-v1-191e5e24cec3+3b0-iommufd_smmuv3_hwinf_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2024-12-03 13:30:31 -04:00
Randy Dunlap
7937a1bf32 iommufd: Fix typos in kernel-doc comments
Fix typos/spellos in kernel-doc comments for readability.

Fixes: aad37e71d5c4 ("iommufd: IOCTLs for the io_pagetable")
Fixes: b7a0855eb95f ("iommu: Add new flag to explictly request PASID capable domain")
Fixes: d68beb276ba2 ("iommu/arm-smmu-v3: Support IOMMU_HWPT_INVALIDATE using a VIOMMU object")
Link: https://patch.msgid.link/r/20241128035159.374624-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2024-12-03 10:56:49 -04:00
Linus Torvalds
dd54fcced8 io_uring-6.13-20242901
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Merge tag 'io_uring-6.13-20242901' of git://git.kernel.dk/linux

Pull more io_uring updates from Jens Axboe:

 - Remove a leftover struct from when the cqwait registered waiting was
   transitioned to regions.

 - Fix for an issue introduced in this merge window, where nop->fd might
   be used uninitialized. Ensure it's always set.

 - Add capping of the task_work run in local task_work mode, to prevent
   bursty and long chains from adding too much latency.

 - Work around xa_store() leaving ->head non-NULL if it encounters an
   allocation error during storing. Just a debug trigger, and can go
   away once xa_store() behaves in a more expected way for this
   condition. Not a major thing as it basically requires fault injection
   to trigger it.

 - Fix a few mapping corner cases

 - Fix KCSAN complaint on reading the table size post unlock. Again not
   a "real" issue, but it's easy to silence by just keeping the reading
   inside the lock that protects it.

* tag 'io_uring-6.13-20242901' of git://git.kernel.dk/linux:
  io_uring/tctx: work around xa_store() allocation error issue
  io_uring: fix corner case forgetting to vunmap
  io_uring: fix task_work cap overshooting
  io_uring: check for overflows in io_pin_pages
  io_uring/nop: ensure nop->fd is always initialized
  io_uring: limit local tw done
  io_uring: add io_local_work_pending()
  io_uring/region: return negative -E2BIG in io_create_region()
  io_uring: protect register tracing
  io_uring: remove io_uring_cqwait_reg_arg
2024-11-30 15:43:02 -08:00
Linus Torvalds
2eff01ee28 Char/Misc/IIO/Whatever driver subsystem updates for 6.13-rc1
Here is the "big and hairy" char/misc/iio and other small driver
 subsystem updates for 6.13-rc1.  Sorry for doing this at the end of the
 merge window, conference and holiday travel got in the way on my side
 (hence the 5am pull request emails...)
 
 Loads of things in here, and even a fun merge conflict!
   - rust misc driver bindings and other rust changes to make misc
     drivers actually possible.  I think this is the tipping point,
     expect to see way more rust drivers going forward now that these
     bindings are present.  Next merge window hopefully we will have pci
     and platform drivers working, which will fully enable almost all
     driver subsystems to start accepting (or at least getting) rust
     drivers.  This is the end result of a lot of work from a lot of
     people, congrats to all of them for getting this far, you've proved
     many of us wrong in the best way possible, working code :)
   - IIO driver updates, too many to list individually, that subsystem
     keeps growing and growing...
   - Interconnect driver updates
   - nvmem driver updates
   - pwm driver updates
   - platform_driver::remove() fixups, loads of them
   - counter driver updates
   - misc driver updates (keba?)
   - binder driver updates and fixes
   - loads of other small char/misc/etc driver updates and additions,
     full details in the shortlog.
 
 Note, there is a semi-hairy rust merge conflict when pulling this.  The
 resolution has been in linux-next for a while and can be seen here:
 	https://lore.kernel.org/all/20241111173459.2646d4af@canb.auug.org.au/
 
 All of these have been in linux-next for a while, with no other reported
 issues other than that merge conflict.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc/IIO/whatever driver subsystem updates from Greg KH:
 "Here is the 'big and hairy' char/misc/iio and other small driver
  subsystem updates for 6.13-rc1.

  Loads of things in here, and even a fun merge conflict!

   - rust misc driver bindings and other rust changes to make misc
     drivers actually possible.

     I think this is the tipping point, expect to see way more rust
     drivers going forward now that these bindings are present. Next
     merge window hopefully we will have pci and platform drivers
     working, which will fully enable almost all driver subsystems to
     start accepting (or at least getting) rust drivers.

     This is the end result of a lot of work from a lot of people,
     congrats to all of them for getting this far, you've proved many of
     us wrong in the best way possible, working code :)

   - IIO driver updates, too many to list individually, that subsystem
     keeps growing and growing...

   - Interconnect driver updates

   - nvmem driver updates

   - pwm driver updates

   - platform_driver::remove() fixups, loads of them

   - counter driver updates

   - misc driver updates (keba?)

   - binder driver updates and fixes

   - loads of other small char/misc/etc driver updates and additions,
     full details in the shortlog.

  All of these have been in linux-next for a while, with no other
  reported issues other than that merge conflict"

* tag 'char-misc-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (401 commits)
  mei: vsc: Fix typo "maintstepping" -> "mainstepping"
  firmware: Switch back to struct platform_driver::remove()
  misc: isl29020: Fix the wrong format specifier
  scripts/tags.sh: Don't tag usages of DEFINE_MUTEX
  fpga: Switch back to struct platform_driver::remove()
  mei: vsc: Improve error logging in vsc_identify_silicon()
  mei: vsc: Do not re-enable interrupt from vsc_tp_reset()
  dt-bindings: spmi: qcom,x1e80100-spmi-pmic-arb: Add SAR2130P compatible
  dt-bindings: spmi: spmi-mtk-pmif: Add compatible for MT8188
  spmi: pmic-arb: fix return path in for_each_available_child_of_node()
  iio: Move __private marking before struct element priv in struct iio_dev
  docs: iio: ad7380: add adaq4370-4 and adaq4380-4
  iio: adc: ad7380: add support for adaq4370-4 and adaq4380-4
  iio: adc: ad7380: use local dev variable to shorten long lines
  iio: adc: ad7380: fix oversampling formula
  dt-bindings: iio: adc: ad7380: add adaq4370-4 and adaq4380-4 compatible parts
  bus: mhi: host: pci_generic: Use pcim_iomap_region() to request and map MHI BAR
  bus: mhi: host: Switch trace_mhi_gen_tre fields to native endian
  misc: atmel-ssc: Use of_property_present() for non-boolean properties
  misc: keba: Add hardware dependency
  ...
2024-11-29 11:58:27 -08:00
Linus Torvalds
e33a6d83e1 USB / Thunderbolt (USB4) changes for 6.13-rc1
Here is the big set of USB and Thunderbolt changes for 6.13-rc1.
 
 Overall, a pretty slow development cycle, the majority of the work going
 into the debugfs interface for the thunderbolt (i.e. USB4) code, to help
 with debugging the myrad ways that hardware vendors get their interfaces
 messed up.  Other than that, here's the highlights:
   - thunderbolt changes and additions to debugfs interfaces
   - lots of device tree updates for new and old hardware
   - UVC configfs gadget updates and new apis for features
   - xhci driver updates and fixes
   - dwc3 driver updates and fixes
   - typec driver updates and fixes
   - lots of other small updates and fixes, full details in the shortlog
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt changes for 6.13-rc1.

  Overall, a pretty slow development cycle, the majority of the work
  going into the debugfs interface for the thunderbolt (i.e. USB4) code,
  to help with debugging the myrad ways that hardware vendors get their
  interfaces messed up. Other than that, here's the highlights:

   - thunderbolt changes and additions to debugfs interfaces

   - lots of device tree updates for new and old hardware

   - UVC configfs gadget updates and new apis for features

   - xhci driver updates and fixes

   - dwc3 driver updates and fixes

   - typec driver updates and fixes

   - lots of other small updates and fixes, full details in the shortlog

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'usb-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (148 commits)
  usb: typec: tcpm: Add support for sink-bc12-completion-time-ms DT property
  dt-bindings: usb: maxim,max33359: add usage of sink bc12 time property
  dt-bindings: connector: Add time property for Sink BC12 detection completion
  usb: dwc3: gadget: Remove dwc3_request->needs_extra_trb
  usb: dwc3: gadget: Cleanup SG handling
  usb: dwc3: gadget: Fix looping of queued SG entries
  usb: dwc3: gadget: Fix checking for number of TRBs left
  usb: dwc3: ep0: Don't clear ep0 DWC3_EP_TRANSFER_STARTED
  Revert "usb: gadget: composite: fix OS descriptors w_value logic"
  usb: ehci-spear: fix call balance of sehci clk handling routines
  USB: make to_usb_device_driver() use container_of_const()
  USB: make to_usb_driver() use container_of_const()
  USB: properly lock dynamic id list when showing an id
  USB: make single lock for all usb dynamic id lists
  drivers/usb/storage: refactor min with min_t
  drivers/usb/serial: refactor min with min_t
  drivers/usb/musb: refactor min/max with min_t/max_t
  drivers/usb/mon: refactor min with min_t
  drivers/usb/misc: refactor min with min_t
  drivers/usb/host: refactor min/max with min_t/max_t
  ...
2024-11-29 11:19:31 -08:00
Linus Torvalds
4aca98a8a1 VFIO updates for v6.13
- Constify an unmodified structure used in linking vfio and kvm.
    (Christophe JAILLET)
 
  - Add ID for an additional hardware SKU supported by the nvgrace-gpu
    vfio-pci variant driver. (Ankit Agrawal)
 
  - Fix incorrect signed cast in QAT vfio-pci variant driver, negating
    test in check_add_overflow(), though still caught by later tests.
    (Giovanni Cabiddu)
 
  - Additional debugfs attributes exposed in hisi_acc vfio-pci variant
    driver for migration debugging. (Longfang Liu)
 
  - Migration support is added to the virtio vfio-pci variant driver,
    becoming the primary feature of the driver while retaining emulation
    of virtio legacy support as a secondary option. (Yishai Hadas)
 
  - Fixes to a few unwind flows in the mlx5 vfio-pci driver discovered
    through reviews of the virtio variant driver. (Yishai Hadas)
 
  - Fix an unlikely issue where a PCI device exposed to userspace with
    an unknown capability at the base of the extended capability chain
    can overflow an array index. (Avihai Horon)
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Merge tag 'vfio-v6.13-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Constify an unmodified structure used in linking vfio and kvm
   (Christophe JAILLET)

 - Add ID for an additional hardware SKU supported by the nvgrace-gpu
   vfio-pci variant driver (Ankit Agrawal)

 - Fix incorrect signed cast in QAT vfio-pci variant driver, negating
   test in check_add_overflow(), though still caught by later tests
   (Giovanni Cabiddu)

 - Additional debugfs attributes exposed in hisi_acc vfio-pci variant
   driver for migration debugging (Longfang Liu)

 - Migration support is added to the virtio vfio-pci variant driver,
   becoming the primary feature of the driver while retaining emulation
   of virtio legacy support as a secondary option (Yishai Hadas)

 - Fixes to a few unwind flows in the mlx5 vfio-pci driver discovered
   through reviews of the virtio variant driver (Yishai Hadas)

 - Fix an unlikely issue where a PCI device exposed to userspace with an
   unknown capability at the base of the extended capability chain can
   overflow an array index (Avihai Horon)

* tag 'vfio-v6.13-rc1' of https://github.com/awilliam/linux-vfio:
  vfio/pci: Properly hide first-in-list PCIe extended capability
  vfio/mlx5: Fix unwind flows in mlx5vf_pci_save/resume_device_data()
  vfio/mlx5: Fix an unwind issue in mlx5vf_add_migration_pages()
  vfio/virtio: Enable live migration once VIRTIO_PCI was configured
  vfio/virtio: Add PRE_COPY support for live migration
  vfio/virtio: Add support for the basic live migration functionality
  virtio-pci: Introduce APIs to execute device parts admin commands
  virtio: Manage device and driver capabilities via the admin commands
  virtio: Extend the admin command to include the result size
  virtio_pci: Introduce device parts access commands
  Documentation: add debugfs description for hisi migration
  hisi_acc_vfio_pci: register debugfs for hisilicon migration driver
  hisi_acc_vfio_pci: create subfunction for data reading
  hisi_acc_vfio_pci: extract public functions for container_of
  vfio/qat: fix overflow check in qat_vf_resume_write()
  vfio/nvgrace-gpu: Add a new GH200 SKU to the devid table
  kvm/vfio: Constify struct kvm_device_ops
2024-11-27 12:57:03 -08:00
Linus Torvalds
91dbbe6c9f RISC-V Paches for the 6.13 Merge Window, Part 1
* Support for pointer masking in userspace,
 * Support for probing vector misaligned access performance.
 * Support for qspinlock on systems with Zacas and Zabha.
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Merge tag 'riscv-for-linus-6.13-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-v updates from Palmer Dabbelt:

 - Support for pointer masking in userspace

 - Support for probing vector misaligned access performance

 - Support for qspinlock on systems with Zacas and Zabha

* tag 'riscv-for-linus-6.13-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (38 commits)
  RISC-V: Remove unnecessary include from compat.h
  riscv: Fix default misaligned access trap
  riscv: Add qspinlock support
  dt-bindings: riscv: Add Ziccrse ISA extension description
  riscv: Add ISA extension parsing for Ziccrse
  asm-generic: ticket-lock: Add separate ticket-lock.h
  asm-generic: ticket-lock: Reuse arch_spinlock_t of qspinlock
  riscv: Implement xchg8/16() using Zabha
  riscv: Implement arch_cmpxchg128() using Zacas
  riscv: Improve zacas fully-ordered cmpxchg()
  riscv: Implement cmpxchg8/16() using Zabha
  dt-bindings: riscv: Add Zabha ISA extension description
  riscv: Implement cmpxchg32/64() using Zacas
  riscv: Do not fail to build on byte/halfword operations with Zawrs
  riscv: Move cpufeature.h macros into their own header
  KVM: riscv: selftests: Add Smnpm and Ssnpm to get-reg-list test
  RISC-V: KVM: Allow Smnpm and Ssnpm extensions for guests
  riscv: hwprobe: Export the Supm ISA extension
  riscv: selftests: Add a pointer masking test
  riscv: Allow ptrace control of the tagged address ABI
  ...
2024-11-27 11:19:09 -08:00
Linus Torvalds
1746db26f8 pci-v6.13-changes
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Merge tag 'pci-v6.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:

   - Make pci_stop_dev() and pci_destroy_dev() safe so concurrent
     callers can't stop a device multiple times, even as we migrate from
     the global pci_rescan_remove_lock to finer-grained locking (Keith
     Busch)

   - Improve pci_walk_bus() implementation by making it recursive and
     moving locking up to avoid need for a 'locked' parameter (Keith
     Busch)

   - Unexport pci_walk_bus_locked(), which is only used internally by
     the PCI core (Keith Busch)

   - Detect some Thunderbolt chips that are built-in and hence
     'trustworthy' by a heuristic since the 'ExternalFacingPort' and
     'usb4-host-interface' ACPI properties are not quite enough (Esther
     Shimanovich)

  Resource management:

   - Use PCI bus addresses (not CPU addresses) in 'ranges' properties
     when building dynamic DT nodes so systems where PCI and CPU
     addresses differ work correctly (Andrea della Porta)

   - Tidy resource sizing and assignment with helpers to reduce
     redundancy (Ilpo Järvinen)

   - Improve pdev_sort_resources() 'bogus alignment' warning to be more
     specific (Ilpo Järvinen)

  Driver binding:

   - Convert driver .remove_new() callbacks to .remove() again to finish
     the conversion from returning 'int' to being 'void' (Sergio
     Paracuellos)

   - Export pcim_request_all_regions(), a managed interface to request
     all BARs (Philipp Stanner)

   - Replace pcim_iomap_regions_request_all() with
     pcim_request_all_regions(), and pcim_iomap_table()[n] with
     pcim_iomap(n), in the following drivers: ahci, crypto qat, crypto
     octeontx2, intel_th, iwlwifi, ntb idt, serial rp2, ALSA korg1212
     (Philipp Stanner)

   - Remove the now unused pcim_iomap_regions_request_all() (Philipp
     Stanner)

   - Export pcim_iounmap_region(), a managed interface to unmap and
     release a PCI BAR (Philipp Stanner)

   - Replace pcim_iomap_regions(mask) with pcim_iomap_region(n), and
     pcim_iounmap_regions(mask) with pcim_iounmap_region(n), in the
     following drivers: fpga dfl-pci, block mtip32xx, gpio-merrifield,
     cavium (Philipp Stanner)

  Error handling:

   - Add sysfs 'reset_subordinate' to reset the entire hierarchy below a
     bridge; previously Secondary Bus Reset could only be used when
     there was a single device below a bridge (Keith Busch)

   - Warn if we reset a running device where the driver didn't register
     pci_error_handlers notification callbacks (Keith Busch)

  ASPM:

   - Disable ASPM L1 before touching L1 PM Substates to follow the spec
     closer and avoid a CPU load timeout on some platforms (Ajay
     Agarwal)

   - Set devices below Intel VMD to D0 before enabling ASPM L1 Substates
     as required per spec for all L1 Substates changes (Jian-Hong Pan)

  Power management:

   - Enable starfive controller runtime PM before probing host bridge
     (Mayank Rana)

   - Enable runtime power management for host bridges (Krishna chaitanya
     chundru)

  Power control:

   - Use of_platform_device_create() instead of of_platform_populate()
     to create pwrctl platform devices so we can control it based on the
     child nodes (Manivannan Sadhasivam)

   - Create pwrctrl platform devices only if there's a relevant power
     supply property (Manivannan Sadhasivam)

   - Add device link from the pwrctl supplier to the PCI dev to ensure
     pwrctl drivers are probed before the PCI dev driver; this avoids a
     race where pwrctl could change device power state while the PCI
     driver was active (Manivannan Sadhasivam)

   - Find pwrctl device for removal with of_find_device_by_node()
     instead of searching all children of the parent (Manivannan
     Sadhasivam)

   - Rename 'pwrctl' to 'pwrctrl' to match new bandwidth controller
     ('bwctrl') and hotplug files (Bjorn Helgaas)

  Bandwidth control:

   - Add read/modify/write locking for Link Control 2, which is used to
     manage Link speed (Ilpo Järvinen)

   - Extract Link Bandwidth Management Status check into
     pcie_lbms_seen(), where it can be shared between the bandwidth
     controller and quirks that use it to help retrain failed links
     (Ilpo Järvinen)

   - Re-add Link Bandwidth notification support with updates to address
     the reasons it was previously reverted (Alexandru Gagniuc, Ilpo
     Järvinen)

   - Add pcie_set_target_speed() and related functionality so drivers
     can manage PCIe Link speed based on thermal or other constraints
     (Ilpo Järvinen)

   - Add a thermal cooling driver to throttle PCIe Links via the
     existing thermal management framework (Ilpo Järvinen)

   - Add a userspace selftest for the PCIe bandwidth controller (Ilpo
     Järvinen)

  PCI device hotplug:

   - Add hotplug controller driver for Marvell OCTEON multi-function
     device where function 0 has a management console interface to
     enable/disable and provision various personalities for the other
     functions (Shijith Thotton)

   - Retain a reference to the pci_bus for the lifetime of a pci_slot to
     avoid a use-after-free when the thunderbolt driver resets USB4 host
     routers on boot, causing hotplug remove/add of downstream docks or
     other devices (Lukas Wunner)

   - Remove unused cpcihp struct cpci_hp_controller_ops.hardware_test
     (Guilherme Giacomo Simoes)

   - Remove unused cpqphp struct ctrl_dbg.ctrl (Christophe JAILLET)

   - Use pci_bus_read_dev_vendor_id() instead of hand-coded presence
     detection in cpqphp (Ilpo Järvinen)

   - Simplify cpqphp enumeration, which is already simple-minded and
     doesn't handle devices below hot-added bridges (Ilpo Järvinen)

  Virtualization:

   - Add ACS quirk for Wangxun FF5xxx NICs, which don't advertise an ACS
     capability but do isolate functions as though PCI_ACS_RR and
     PCI_ACS_CR were set, so the functions can be in independent IOMMU
     groups (Mengyuan Lou)

  TLP Processing Hints (TPH):

   - Add and document TLP Processing Hints (TPH) support so drivers can
     enable and disable TPH and the kernel can save/restore TPH
     configuration (Wei Huang)

   - Add TPH Steering Tag support so drivers can retrieve Steering Tag
     values associated with specific CPUs via an ACPI _DSM to improve
     performance by directing DMA writes closer to their consumers (Wei
     Huang)

  Data Object Exchange (DOE):

   - Wait up to 1 second for DOE Busy bit to clear before writing a
     request to the mailbox to avoid failures if the mailbox is still
     busy from a previous transfer (Gregory Price)

  Endpoint framework:

   - Skip attempts to allocate from endpoint controller memory window if
     the requested size is larger than the window (Damien Le Moal)

   - Add and document pci_epc_mem_map() and pci_epc_mem_unmap() to
     handle controller-specific size and alignment constraints, and add
     test cases to the endpoint test driver (Damien Le Moal)

   - Implement dwc pci_epc_ops.align_addr() so pci_epc_mem_map() can
     observe DWC-specific alignment requirements (Damien Le Moal)

   - Synchronously cancel command handler work in endpoint test before
     cleaning up DMA and BARs (Damien Le Moal)

   - Respect endpoint page size in dw_pcie_ep_align_addr() (Niklas
     Cassel)

   - Use dw_pcie_ep_align_addr() in dw_pcie_ep_raise_msi_irq() and
     dw_pcie_ep_raise_msix_irq() instead of open coding the equivalent
     (Niklas Cassel)

   - Avoid NULL dereference if Modem Host Interface Endpoint lacks
     'mmio' DT property (Zhongqiu Han)

   - Release PCI domain ID of Endpoint controller parent (not controller
     itself) and before unregistering the controller, to avoid
     use-after-free (Zijun Hu)

   - Clear secondary (not primary) EPC in pci_epc_remove_epf() when
     removing the secondary controller associated with an NTB (Zijun Hu)

  Cadence PCIe controller driver:

   - Lower severity of 'phy-names' message (Bartosz Wawrzyniak)

  Freescale i.MX6 PCIe controller driver:

   - Fix suspend/resume support on i.MX6QDL, which has a hardware
     erratum that prevents use of L2 (Stefan Eichenberger)

  Intel VMD host bridge driver:

   - Add 0xb60b and 0xb06f Device IDs for client SKUs (Nirmal Patel)

  MediaTek PCIe Gen3 controller driver:

   - Update mediatek-gen3 DT binding to require the exact number of
     clocks for each SoC (Fei Shao)

   - Add support for DT 'max-link-speed' and 'num-lanes' properties to
     restrict the link speed and width (AngeloGioacchino Del Regno)

  Microchip PolarFlare PCIe controller driver:

   - Add DT and driver support for using either of the two PolarFire
     Root Ports (Conor Dooley)

  NVIDIA Tegra194 PCIe controller driver:

   - Move endpoint controller cleanups that depend on refclk from the
     host to the notifier that tells us the host has deasserted PERST#,
     when refclk should be valid (Manivannan Sadhasivam)

  Qualcomm PCIe controller driver:

   - Add qcom SAR2130P DT binding with an additional clock (Dmitry
     Baryshkov)

   - Enable MSI interrupts if 'global' IRQ is supported, since a
     previous commit unintentionally masked them (Manivannan Sadhasivam)

   - Move endpoint controller cleanups that depend on refclk from the
     host to the notifier that tells us the host has deasserted PERST#,
     when refclk should be valid (Manivannan Sadhasivam)

   - Add DT binding and driver support for IPQ9574, with Synopsys IP
     v5.80a and Qcom IP 1.27.0 (devi priya)

   - Move the OPP "operating-points-v2" table from the
     qcom,pcie-sm8450.yaml DT binding to qcom,pcie-common.yaml, where it
     can be used by other Qcom platforms (Qiang Yu)

   - Add 'global' SPI interrupt for events like link-up, link-down to
     qcom,pcie-x1e80100 DT binding so we can start enumeration when the
     link comes up (Qiang Yu)

   - Disable ASPM L0s for qcom,pcie-x1e80100 since the PHY is not tuned
     to support this (Qiang Yu)

   - Add ops_1_21_0 for SC8280X family SoC, which doesn't use the
     'iommu-map' DT property and doesn't need BDF-to-SID translation
     (Qiang Yu)

  Rockchip PCIe controller driver:

   - Define ROCKCHIP_PCIE_AT_SIZE_ALIGN to replace magic 256 endpoint
     .align value (Damien Le Moal)

   - When unmapping an endpoint window, compute the region index instead
     of searching for it, and verify that the address was mapped (Damien
     Le Moal)

   - When mapping an endpoint window, verify that the address hasn't
     been mapped already (Damien Le Moal)

   - Implement pci_epc_ops.align_addr() for rockchip-ep (Damien Le Moal)

   - Fix MSI IRQ data mapping to observe the alignment constraint, which
     fixes intermittent page faults in memcpy_toio() and memcpy_fromio()
     (Damien Le Moal)

   - Rename rockchip_pcie_parse_ep_dt() to
     rockchip_pcie_ep_get_resources() for consistency with similar DT
     interfaces (Damien Le Moal)

   - Skip the unnecessary link train in rockchip_pcie_ep_probe() and do
     it only in the endpoint start operation (Damien Le Moal)

   - Implement pci_epc_ops.stop_link() to disable link training and
     controller configuration (Damien Le Moal)

   - Attempt link training at 5 GT/s when both partners support it
     (Damien Le Moal)

   - Add a handler for PERST# signal so we can detect host-initiated
     resets and start link training after PERST# is deasserted (Damien
     Le Moal)

  Synopsys DesignWare PCIe controller driver:

   - Clear outbound address on unmap so dw_pcie_find_index() won't match
     an ATU index that was already unmapped (Damien Le Moal)

   - Use of_property_present() instead of of_property_read_bool() when
     testing for presence of non-boolean DT properties (Rob Herring)

   - Advertise 1MB size if endpoint supports Resizable BARs, which was
     inadvertently lost in v6.11 (Niklas Cassel)

  TI J721E PCIe driver:

   - Add PCIe support for J722S SoC (Siddharth Vadapalli)

   - Delay PCIE_T_PVPERL_MS (100 ms), not just PCIE_T_PERST_CLK_US (100
     us), before deasserting PERST# to ensure power and refclk are
     stable (Siddharth Vadapalli)

  TI Keystone PCIe controller driver:

   - Set the 'ti,keystone-pcie' mode so v3.65a devices work in Root
     Complex mode (Kishon Vijay Abraham I)

   - Try to avoid unrecoverable SError for attempts to issue config
     transactions when the link is down; this is racy but the best we
     can do (Kishon Vijay Abraham I)

  Miscellaneous:

   - Reorganize kerneldoc parameter names to match order in function
     signature (Julia Lawall)

   - Fix sysfs reset_method_store() memory leak (Todd Kjos)

   - Simplify pci_create_slot() (Ilpo Järvinen)

   - Fix incorrect printf format specifiers in pcitest (Luo Yifan)"

* tag 'pci-v6.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (127 commits)
  PCI: rockchip-ep: Handle PERST# signal in EP mode
  PCI: rockchip-ep: Improve link training
  PCI: rockship-ep: Implement the pci_epc_ops::stop_link() operation
  PCI: rockchip-ep: Refactor endpoint link training enable
  PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() MSI-X hiding
  PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() memory allocations
  PCI: rockchip-ep: Rename rockchip_pcie_parse_ep_dt()
  PCI: rockchip-ep: Fix MSI IRQ data mapping
  PCI: rockchip-ep: Implement the pci_epc_ops::align_addr() operation
  PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr()
  PCI: rockchip-ep: Improve rockchip_pcie_ep_unmap_addr()
  PCI: rockchip-ep: Use a macro to define EP controller .align feature
  PCI: rockchip-ep: Fix address translation unit programming
  PCI/pwrctrl: Rename pwrctrl functions and structures
  PCI/pwrctrl: Rename pwrctl files to pwrctrl
  PCI/pwrctl: Remove pwrctl device without iterating over all children of pwrctl parent
  PCI/pwrctl: Ensure that pwrctl drivers are probed before PCI client drivers
  PCI/pwrctl: Create pwrctl device only if at least one power supply is present
  PCI/pwrctl: Use of_platform_device_create() to create pwrctl devices
  tools: PCI: Fix incorrect printf format specifiers
  ...
2024-11-26 18:05:44 -08:00
Linus Torvalds
1675db5c42 vfs-6.13.exportfs
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Merge tag 'vfs-6.13.exportfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs exportfs updates from Christian Brauner:
 "This contains work to bring NFS connectable file handles to userspace
  servers.

  The name_to_handle_at() system call is extended to encode connectable
  file handles. Such file handles can be resolved to an open file with a
  connected path. So far userspace NFS servers couldn't make use of this
  functionality even though the kernel does already support it. This is
  achieved by introducing a new flag for name_to_handle_at().

  Similarly, the open_by_handle_at() system call is tought to understand
  connectable file handles explicitly created via name_to_handle_at()"

* tag 'vfs-6.13.exportfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  fs: open_by_handle_at() support for decoding "explicit connectable" file handles
  fs: name_to_handle_at() support for "explicit connectable" file handles
  fs: prepare for "explicit connectable" file handles
2024-11-26 13:26:15 -08:00
Linus Torvalds
44b4d13b70 f2fs-for-6.13-rc1
This series introduces a device aliasing feature where user can carve out
 partitions but reclaim the space back by deleting aliased file in root dir.
 In addition to that, there're numerous minor bug fixes in zoned device support,
 checkpoint=disable, extent cache management, fiemap, and lazytime mount option.
 The full list of noticeable changes can be found below.
 
 Enhancement:
  - introduce device aliasing file
  - add stats in debugfs to show multiple devices
  - add a sysfs node to limit max read extent count per-inode
  - modify f2fs_is_checkpoint_ready logic to allow more data to be written with the CP disable
  - decrease spare area for pinned files for zoned devices
 
 Bug fix:
  - Revert "f2fs: remove unreachable lazytime mount option parsing"
  - adjust unusable cap before checkpoint=disable mode
  - fix to drop all discards after creating snapshot on lvm device
  - fix to shrink read extent node in batches
  - fix changing cursegs if recovery fails on zoned device
  - fix to adjust appropriate length for fiemap
  - fix fiemap failure issue when page size is 16KB
  - fix to avoid forcing direct write to use buffered IO on inline_data inode
  - fix to map blocks correctly for direct write
  - fix to account dirty data in __get_secs_required()
  - fix null-ptr-deref in f2fs_submit_page_bio()
  - f2fs: compress: fix inconsistent update of i_blocks in release_compress_blocks and reserve_compress_blocks
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Merge tag 'f2fs-for-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "This series introduces a device aliasing feature where user can carve
  out partitions but reclaim the space back by deleting aliased file in
  root dir.

  In addition to that, there're numerous minor bug fixes in zoned device
  support, checkpoint=disable, extent cache management, fiemap, and
  lazytime mount option. The full list of noticeable changes can be
  found below.

  Enhancements:
   - introduce device aliasing file
   - add stats in debugfs to show multiple devices
   - add a sysfs node to limit max read extent count per-inode
   - modify f2fs_is_checkpoint_ready logic to allow more data to be
     written with the CP disable
   - decrease spare area for pinned files for zoned devices

  Fixes:
   - Revert "f2fs: remove unreachable lazytime mount option parsing"
   - adjust unusable cap before checkpoint=disable mode
   - fix to drop all discards after creating snapshot on lvm device
   - fix to shrink read extent node in batches
   - fix changing cursegs if recovery fails on zoned device
   - fix to adjust appropriate length for fiemap
   - fix fiemap failure issue when page size is 16KB
   - fix to avoid forcing direct write to use buffered IO on inline_data
     inode
   - fix to map blocks correctly for direct write
   - fix to account dirty data in __get_secs_required()
   - fix null-ptr-deref in f2fs_submit_page_bio()
   - fix inconsistent update of i_blocks in release_compress_blocks and
     reserve_compress_blocks"

* tag 'f2fs-for-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (40 commits)
  f2fs: fix to drop all discards after creating snapshot on lvm device
  f2fs: add a sysfs node to limit max read extent count per-inode
  f2fs: fix to shrink read extent node in batches
  f2fs: print message if fscorrupted was found in f2fs_new_node_page()
  f2fs: clear SBI_POR_DOING before initing inmem curseg
  f2fs: fix changing cursegs if recovery fails on zoned device
  f2fs: adjust unusable cap before checkpoint=disable mode
  f2fs: fix to requery extent which cross boundary of inquiry
  f2fs: fix to adjust appropriate length for fiemap
  f2fs: clean up w/ F2FS_{BLK_TO_BYTES,BTYES_TO_BLK}
  f2fs: fix to do cast in F2FS_{BLK_TO_BYTES, BTYES_TO_BLK} to avoid overflow
  f2fs: replace deprecated strcpy with strscpy
  Revert "f2fs: remove unreachable lazytime mount option parsing"
  f2fs: fix to avoid forcing direct write to use buffered IO on inline_data inode
  f2fs: fix to map blocks correctly for direct write
  f2fs: fix race in concurrent f2fs_stop_gc_thread
  f2fs: fix fiemap failure issue when page size is 16KB
  f2fs: remove redundant atomic file check in defragment
  f2fs: fix to convert log type to segment data type correctly
  f2fs: clean up the unused variable additional_reserved_segments
  ...
2024-11-26 12:50:58 -08:00
Bjorn Helgaas
ab02bafcec Merge branch 'pci/tph'
- Add and document TLP Processing Hints (TPH) support so drivers can enable
  and disable TPH and the kernel can save/restore TPH configuration (Wei
  Huang)

- Add TPH Steering Tag support so drivers can retrieve Steering Tag values
  associated with specific CPUs via an ACPI _DSM to direct DMA writes
  closer to their consumers (Wei Huang)

* pci/tph:
  PCI/TPH: Add TPH documentation
  PCI/TPH: Add Steering Tag support
  PCI: Add TLP Processing Hints (TPH) support
2024-11-25 13:40:55 -06:00
Linus Torvalds
9f16d5e6f2 The biggest change here is eliminating the awful idea that KVM had, of
essentially guessing which pfns are refcounted pages.  The reason to
 do so was that KVM needs to map both non-refcounted pages (for example
 BARs of VFIO devices) and VM_PFNMAP/VM_MIXMEDMAP VMAs that contain
 refcounted pages.  However, the result was security issues in the past,
 and more recently the inability to map VM_IO and VM_PFNMAP memory
 that _is_ backed by struct page but is not refcounted.  In particular
 this broke virtio-gpu blob resources (which directly map host graphics
 buffers into the guest as "vram" for the virtio-gpu device) with the
 amdgpu driver, because amdgpu allocates non-compound higher order pages
 and the tail pages could not be mapped into KVM.
 
 This requires adjusting all uses of struct page in the per-architecture
 code, to always work on the pfn whenever possible.  The large series that
 did this, from David Stevens and Sean Christopherson, also cleaned up
 substantially the set of functions that provided arch code with the
 pfn for a host virtual addresses.  The previous maze of twisty little
 passages, all different, is replaced by five functions (__gfn_to_page,
 __kvm_faultin_pfn, the non-__ versions of these two, and kvm_prefetch_pages)
 saving almost 200 lines of code.
 
 ARM:
 
 * Support for stage-1 permission indirection (FEAT_S1PIE) and
   permission overlays (FEAT_S1POE), including nested virt + the
   emulated page table walker
 
 * Introduce PSCI SYSTEM_OFF2 support to KVM + client driver. This call
   was introduced in PSCIv1.3 as a mechanism to request hibernation,
   similar to the S4 state in ACPI
 
 * Explicitly trap + hide FEAT_MPAM (QoS controls) from KVM guests. As
   part of it, introduce trivial initialization of the host's MPAM
   context so KVM can use the corresponding traps
 
 * PMU support under nested virtualization, honoring the guest
   hypervisor's trap configuration and event filtering when running a
   nested guest
 
 * Fixes to vgic ITS serialization where stale device/interrupt table
   entries are not zeroed when the mapping is invalidated by the VM
 
 * Avoid emulated MMIO completion if userspace has requested synchronous
   external abort injection
 
 * Various fixes and cleanups affecting pKVM, vCPU initialization, and
   selftests
 
 LoongArch:
 
 * Add iocsr and mmio bus simulation in kernel.
 
 * Add in-kernel interrupt controller emulation.
 
 * Add support for virtualization extensions to the eiointc irqchip.
 
 PPC:
 
 * Drop lingering and utterly obsolete references to PPC970 KVM, which was
   removed 10 years ago.
 
 * Fix incorrect documentation references to non-existing ioctls
 
 RISC-V:
 
 * Accelerate KVM RISC-V when running as a guest
 
 * Perf support to collect KVM guest statistics from host side
 
 s390:
 
 * New selftests: more ucontrol selftests and CPU model sanity checks
 
 * Support for the gen17 CPU model
 
 * List registers supported by KVM_GET/SET_ONE_REG in the documentation
 
 x86:
 
 * Cleanup KVM's handling of Accessed and Dirty bits to dedup code, improve
   documentation, harden against unexpected changes.  Even if the hardware
   A/D tracking is disabled, it is possible to use the hardware-defined A/D
   bits to track if a PFN is Accessed and/or Dirty, and that removes a lot
   of special cases.
 
 * Elide TLB flushes when aging secondary PTEs, as has been done in x86's
   primary MMU for over 10 years.
 
 * Recover huge pages in-place in the TDP MMU when dirty page logging is
   toggled off, instead of zapping them and waiting until the page is
   re-accessed to create a huge mapping.  This reduces vCPU jitter.
 
 * Batch TLB flushes when dirty page logging is toggled off.  This reduces
   the time it takes to disable dirty logging by ~3x.
 
 * Remove the shrinker that was (poorly) attempting to reclaim shadow page
   tables in low-memory situations.
 
 * Clean up and optimize KVM's handling of writes to MSR_IA32_APICBASE.
 
 * Advertise CPUIDs for new instructions in Clearwater Forest
 
 * Quirk KVM's misguided behavior of initialized certain feature MSRs to
   their maximum supported feature set, which can result in KVM creating
   invalid vCPU state.  E.g. initializing PERF_CAPABILITIES to a non-zero
   value results in the vCPU having invalid state if userspace hides PDCM
   from the guest, which in turn can lead to save/restore failures.
 
 * Fix KVM's handling of non-canonical checks for vCPUs that support LA57
   to better follow the "architecture", in quotes because the actual
   behavior is poorly documented.  E.g. most MSR writes and descriptor
   table loads ignore CR4.LA57 and operate purely on whether the CPU
   supports LA57.
 
 * Bypass the register cache when querying CPL from kvm_sched_out(), as
   filling the cache from IRQ context is generally unsafe; harden the
   cache accessors to try to prevent similar issues from occuring in the
   future.  The issue that triggered this change was already fixed in 6.12,
   but was still kinda latent.
 
 * Advertise AMD_IBPB_RET to userspace, and fix a related bug where KVM
   over-advertises SPEC_CTRL when trying to support cross-vendor VMs.
 
 * Minor cleanups
 
 * Switch hugepage recovery thread to use vhost_task.  These kthreads can
   consume significant amounts of CPU time on behalf of a VM or in response
   to how the VM behaves (for example how it accesses its memory); therefore
   KVM tried to place the thread in the VM's cgroups and charge the CPU
   time consumed by that work to the VM's container.  However the kthreads
   did not process SIGSTOP/SIGCONT, and therefore cgroups which had KVM
   instances inside could not complete freezing.  Fix this by replacing the
   kthread with a PF_USER_WORKER thread, via the vhost_task abstraction.
   Another 100+ lines removed, with generally better behavior too like
   having these threads properly parented in the process tree.
 
 * Revert a workaround for an old CPU erratum (Nehalem/Westmere) that didn't
   really work; there was really nothing to work around anyway: the broken
   patch was meant to fix nested virtualization, but the PERF_GLOBAL_CTRL
   MSR is virtualized and therefore unaffected by the erratum.
 
 * Fix 6.12 regression where CONFIG_KVM will be built as a module even
   if asked to be builtin, as long as neither KVM_INTEL nor KVM_AMD is 'y'.
 
 x86 selftests:
 
 * x86 selftests can now use AVX.
 
 Documentation:
 
 * Use rST internal links
 
 * Reorganize the introduction to the API document
 
 Generic:
 
 * Protect vcpu->pid accesses outside of vcpu->mutex with a rwlock instead
   of RCU, so that running a vCPU on a different task doesn't encounter long
   due to having to wait for all CPUs become quiescent.  In general both reads
   and writes are rare, but userspace that supports confidential computing is
   introducing the use of "helper" vCPUs that may jump from one host processor
   to another.  Those will be very happy to trigger a synchronize_rcu(), and
   the effect on performance is quite the disaster.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "The biggest change here is eliminating the awful idea that KVM had of
  essentially guessing which pfns are refcounted pages.

  The reason to do so was that KVM needs to map both non-refcounted
  pages (for example BARs of VFIO devices) and VM_PFNMAP/VM_MIXMEDMAP
  VMAs that contain refcounted pages.

  However, the result was security issues in the past, and more recently
  the inability to map VM_IO and VM_PFNMAP memory that _is_ backed by
  struct page but is not refcounted. In particular this broke virtio-gpu
  blob resources (which directly map host graphics buffers into the
  guest as "vram" for the virtio-gpu device) with the amdgpu driver,
  because amdgpu allocates non-compound higher order pages and the tail
  pages could not be mapped into KVM.

  This requires adjusting all uses of struct page in the
  per-architecture code, to always work on the pfn whenever possible.
  The large series that did this, from David Stevens and Sean
  Christopherson, also cleaned up substantially the set of functions
  that provided arch code with the pfn for a host virtual addresses.

  The previous maze of twisty little passages, all different, is
  replaced by five functions (__gfn_to_page, __kvm_faultin_pfn, the
  non-__ versions of these two, and kvm_prefetch_pages) saving almost
  200 lines of code.

  ARM:

   - Support for stage-1 permission indirection (FEAT_S1PIE) and
     permission overlays (FEAT_S1POE), including nested virt + the
     emulated page table walker

   - Introduce PSCI SYSTEM_OFF2 support to KVM + client driver. This
     call was introduced in PSCIv1.3 as a mechanism to request
     hibernation, similar to the S4 state in ACPI

   - Explicitly trap + hide FEAT_MPAM (QoS controls) from KVM guests. As
     part of it, introduce trivial initialization of the host's MPAM
     context so KVM can use the corresponding traps

   - PMU support under nested virtualization, honoring the guest
     hypervisor's trap configuration and event filtering when running a
     nested guest

   - Fixes to vgic ITS serialization where stale device/interrupt table
     entries are not zeroed when the mapping is invalidated by the VM

   - Avoid emulated MMIO completion if userspace has requested
     synchronous external abort injection

   - Various fixes and cleanups affecting pKVM, vCPU initialization, and
     selftests

  LoongArch:

   - Add iocsr and mmio bus simulation in kernel.

   - Add in-kernel interrupt controller emulation.

   - Add support for virtualization extensions to the eiointc irqchip.

  PPC:

   - Drop lingering and utterly obsolete references to PPC970 KVM, which
     was removed 10 years ago.

   - Fix incorrect documentation references to non-existing ioctls

  RISC-V:

   - Accelerate KVM RISC-V when running as a guest

   - Perf support to collect KVM guest statistics from host side

  s390:

   - New selftests: more ucontrol selftests and CPU model sanity checks

   - Support for the gen17 CPU model

   - List registers supported by KVM_GET/SET_ONE_REG in the
     documentation

  x86:

   - Cleanup KVM's handling of Accessed and Dirty bits to dedup code,
     improve documentation, harden against unexpected changes.

     Even if the hardware A/D tracking is disabled, it is possible to
     use the hardware-defined A/D bits to track if a PFN is Accessed
     and/or Dirty, and that removes a lot of special cases.

   - Elide TLB flushes when aging secondary PTEs, as has been done in
     x86's primary MMU for over 10 years.

   - Recover huge pages in-place in the TDP MMU when dirty page logging
     is toggled off, instead of zapping them and waiting until the page
     is re-accessed to create a huge mapping. This reduces vCPU jitter.

   - Batch TLB flushes when dirty page logging is toggled off. This
     reduces the time it takes to disable dirty logging by ~3x.

   - Remove the shrinker that was (poorly) attempting to reclaim shadow
     page tables in low-memory situations.

   - Clean up and optimize KVM's handling of writes to
     MSR_IA32_APICBASE.

   - Advertise CPUIDs for new instructions in Clearwater Forest

   - Quirk KVM's misguided behavior of initialized certain feature MSRs
     to their maximum supported feature set, which can result in KVM
     creating invalid vCPU state. E.g. initializing PERF_CAPABILITIES to
     a non-zero value results in the vCPU having invalid state if
     userspace hides PDCM from the guest, which in turn can lead to
     save/restore failures.

   - Fix KVM's handling of non-canonical checks for vCPUs that support
     LA57 to better follow the "architecture", in quotes because the
     actual behavior is poorly documented. E.g. most MSR writes and
     descriptor table loads ignore CR4.LA57 and operate purely on
     whether the CPU supports LA57.

   - Bypass the register cache when querying CPL from kvm_sched_out(),
     as filling the cache from IRQ context is generally unsafe; harden
     the cache accessors to try to prevent similar issues from occuring
     in the future. The issue that triggered this change was already
     fixed in 6.12, but was still kinda latent.

   - Advertise AMD_IBPB_RET to userspace, and fix a related bug where
     KVM over-advertises SPEC_CTRL when trying to support cross-vendor
     VMs.

   - Minor cleanups

   - Switch hugepage recovery thread to use vhost_task.

     These kthreads can consume significant amounts of CPU time on
     behalf of a VM or in response to how the VM behaves (for example
     how it accesses its memory); therefore KVM tried to place the
     thread in the VM's cgroups and charge the CPU time consumed by that
     work to the VM's container.

     However the kthreads did not process SIGSTOP/SIGCONT, and therefore
     cgroups which had KVM instances inside could not complete freezing.

     Fix this by replacing the kthread with a PF_USER_WORKER thread, via
     the vhost_task abstraction. Another 100+ lines removed, with
     generally better behavior too like having these threads properly
     parented in the process tree.

   - Revert a workaround for an old CPU erratum (Nehalem/Westmere) that
     didn't really work; there was really nothing to work around anyway:
     the broken patch was meant to fix nested virtualization, but the
     PERF_GLOBAL_CTRL MSR is virtualized and therefore unaffected by the
     erratum.

   - Fix 6.12 regression where CONFIG_KVM will be built as a module even
     if asked to be builtin, as long as neither KVM_INTEL nor KVM_AMD is
     'y'.

  x86 selftests:

   - x86 selftests can now use AVX.

  Documentation:

   - Use rST internal links

   - Reorganize the introduction to the API document

  Generic:

   - Protect vcpu->pid accesses outside of vcpu->mutex with a rwlock
     instead of RCU, so that running a vCPU on a different task doesn't
     encounter long due to having to wait for all CPUs become quiescent.

     In general both reads and writes are rare, but userspace that
     supports confidential computing is introducing the use of "helper"
     vCPUs that may jump from one host processor to another. Those will
     be very happy to trigger a synchronize_rcu(), and the effect on
     performance is quite the disaster"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (298 commits)
  KVM: x86: Break CONFIG_KVM_X86's direct dependency on KVM_INTEL || KVM_AMD
  KVM: x86: add back X86_LOCAL_APIC dependency
  Revert "KVM: VMX: Move LOAD_IA32_PERF_GLOBAL_CTRL errata handling out of setup_vmcs_config()"
  KVM: x86: switch hugepage recovery thread to vhost_task
  KVM: x86: expose MSR_PLATFORM_INFO as a feature MSR
  x86: KVM: Advertise CPUIDs for new instructions in Clearwater Forest
  Documentation: KVM: fix malformed table
  irqchip/loongson-eiointc: Add virt extension support
  LoongArch: KVM: Add irqfd support
  LoongArch: KVM: Add PCHPIC user mode read and write functions
  LoongArch: KVM: Add PCHPIC read and write functions
  LoongArch: KVM: Add PCHPIC device support
  LoongArch: KVM: Add EIOINTC user mode read and write functions
  LoongArch: KVM: Add EIOINTC read and write functions
  LoongArch: KVM: Add EIOINTC device support
  LoongArch: KVM: Add IPI user mode read and write function
  LoongArch: KVM: Add IPI read and write function
  LoongArch: KVM: Add IPI device support
  LoongArch: KVM: Add iocsr and mmio bus simulation in kernel
  KVM: arm64: Pass on SVE mapping failures
  ...
2024-11-23 16:00:50 -08:00
Linus Torvalds
ceba6f6f33 IOMMU Updates for Linux v6.13:
Including:
 
 	- Core Updates:
 	  - Convert call-sites using iommu_domain_alloc() to more specific
 	    versions and remove function.
 	  - Introduce iommu_paging_domain_alloc_flags().
 	  - Extend support for allocating PASID-capable domains to more
 	    drivers.
 	  - Remove iommu_present().
 	  - Some smaller improvements.
 
 	- New IOMMU driver for RISC-V.
 
 	- Intel VT-d Updates:
 	  - Add domain_alloc_paging support.
 	  - Enable user space IOPFs in non-PASID and non-svm cases.
 	  - Small code refactoring and cleanups.
 	  - Add domain replacement support for pasid.
 
 	- AMD-Vi Updates:
 	  - Adapt to iommu_paging_domain_alloc_flags() interface and alloc V2
 	    page-tables by default.
 	  - Replace custom domain ID allocator with IDA allocator.
 	  - Add ops->release_domain() support.
 	  - Other improvements to device attach and domain allocation code
 	    paths.
 
 	- ARM-SMMU Updates:
 	  - SMMUv2:
 	    - Return -EPROBE_DEFER for client devices probing before their SMMU.
 	    - Devicetree binding updates for Qualcomm MMU-500 implementations.
 	  - SMMUv3:
 	    - Minor fixes and cleanup for NVIDIA's virtual command queue driver.
 	  - IO-PGTable:
 	    - Fix indexing of concatenated PGDs and extend selftest coverage.
 	    - Remove unused block-splitting support.
 
 	- S390 IOMMU:
 	  - Implement support for blocking domain.
 
 	- Mediatek IOMMU:
 	  - Enable 35-bit physical address support for mt8186.
 
 	- OMAP IOMMU driver:
 	  - Adapt to recent IOMMU core changes and unbreak driver.
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Merge tag 'iommu-updates-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull iommu updates from Joerg Roedel:
 "Core Updates:
   - Convert call-sites using iommu_domain_alloc() to more specific
     versions and remove function
   - Introduce iommu_paging_domain_alloc_flags()
   - Extend support for allocating PASID-capable domains to more drivers
   - Remove iommu_present()
   - Some smaller improvements

  New IOMMU driver for RISC-V

  Intel VT-d Updates:
   - Add domain_alloc_paging support
   - Enable user space IOPFs in non-PASID and non-svm cases
   - Small code refactoring and cleanups
   - Add domain replacement support for pasid

  AMD-Vi Updates:
   - Adapt to iommu_paging_domain_alloc_flags() interface and alloc V2
     page-tables by default
   - Replace custom domain ID allocator with IDA allocator
   - Add ops->release_domain() support
   - Other improvements to device attach and domain allocation code
     paths

  ARM-SMMU Updates:
   - SMMUv2:
      - Return -EPROBE_DEFER for client devices probing before their
        SMMU
      - Devicetree binding updates for Qualcomm MMU-500 implementations
   - SMMUv3:
      - Minor fixes and cleanup for NVIDIA's virtual command queue
        driver
   - IO-PGTable:
      - Fix indexing of concatenated PGDs and extend selftest coverage
      - Remove unused block-splitting support

  S390 IOMMU:
   - Implement support for blocking domain

  Mediatek IOMMU:
   - Enable 35-bit physical address support for mt8186

  OMAP IOMMU driver:
   - Adapt to recent IOMMU core changes and unbreak driver"

* tag 'iommu-updates-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (92 commits)
  iommu/tegra241-cmdqv: Fix alignment failure at max_n_shift
  iommu: Make set_dev_pasid op support domain replacement
  iommu/arm-smmu-v3: Make set_dev_pasid() op support replace
  iommu/vt-d: Add set_dev_pasid callback for nested domain
  iommu/vt-d: Make identity_domain_set_dev_pasid() to handle domain replacement
  iommu/vt-d: Make intel_svm_set_dev_pasid() support domain replacement
  iommu/vt-d: Limit intel_iommu_set_dev_pasid() for paging domain
  iommu/vt-d: Make intel_iommu_set_dev_pasid() to handle domain replacement
  iommu/vt-d: Add iommu_domain_did() to get did
  iommu/vt-d: Consolidate the struct dev_pasid_info add/remove
  iommu/vt-d: Add pasid replace helpers
  iommu/vt-d: Refactor the pasid setup helpers
  iommu/vt-d: Add a helper to flush cache for updating present pasid entry
  iommu: Pass old domain to set_dev_pasid op
  iommu/iova: Fix typo 'adderss'
  iommu: Add a kdoc to iommu_unmap()
  iommu/io-pgtable-arm-v7s: Remove split on unmap behavior
  iommu/io-pgtable-arm: Remove split on unmap behavior
  iommu/vt-d: Drain PRQs when domain removed from RID
  iommu/vt-d: Drop pasid requirement for prq initialization
  ...
2024-11-22 19:55:10 -08:00
Linus Torvalds
28eb75e178 drm for 6.13-rc1
core:
 - split DSC helpers from DP helpers
 - clang build fixes for drm/mm test
 - drop simple pipeline support for gem vram
 - document submission error signaling
 - move drm_rect to drm core module from kms helper
 - add default client setup to most drivers
 - move to video aperture helpers instead of drm ones
 
 tests:
 - new framebuffer tests
 
 ttm:
 - remove swapped and pinned BOs from TTM lru
 
 panic:
 - fix uninit spinlock
 - add ABGR2101010 support
 
 bridge:
 - add TI TDP158 support
 - use standard PM OPS
 
 dma-fence:
 - use read_trylock instead of read_lock to help lockdep
 
 scheduler:
 - add errno to sched start to report different errors
 - add locking to drm_sched_entity_modify_sched
 - improve documentation
 
 xe:
 - add drm_line_printer
 - lots of refactoring
 - Enable Xe2 + PES disaggregation
 - add new ARL PCI ID
 - SRIOV development work
 - fix exec unnecessary implicit fence
 - define and parse OA sync props
 - forcewake refactoring
 
 i915:
 - Enable BMG/LNL ultra joiner
 - Enable 10bpx + CCS scanout on ICL+, fp16/CCS on TGL+
 - use DSB for plane/color mgmt
 - Arrow lake PCI IDs
 - lots of i915/xe display refactoring
 - enable PXP GuC autoteardown
 - Pantherlake (PTL) Xe3 LPD display enablement
 - Allow fastset HDR infoframe changes
 - write DP source OUI for non-eDP sinks
 - share PCI IDs between i915 and xe
 
 amdgpu:
 - SDMA queue reset support
 - SMU 13.0.6, JPEG 4.0.3 updates
 - Initial runtime repartitioning support
 - rework IP structs for multiple IP instances
 - Fetch EDID from _DDC if available
 - SMU13 zero rpm user control
 - lots of fixes/cleanups
 
 amdkfd:
 - Increase event FIFO size
 - add topology cap flag for per queue reset
 
 msm:
 - DPU:
 - SA8775P support
 - (disabled by default) MSM8917, MSM8937, MSM8953 and MSM8996 support
 - Enable large framebuffer support
 - Drop MSM8998 and SDM845
 - DP:
 - SA8775P support
 - GPU:
 - a7xx preemption support
 - Adreno A663 support
 
 ast:
 - warn about unsupported TX chips
 
 ivpu:
 - add coredump
 - add pantherlake support
 
 rockchip:
 - 4K@60Hz display enablement
 - generate pll programming tables
 
 panthor:
 - add timestamp query API
 - add realtime group priority
 - add fdinfo support
 
 etnaviv:
 - improve handling of DMA address limits
 - improve GPU hangcheck
 
 exynos:
 - Decon Exynos7870 support
 
 mediatek:
 - add OF graph support
 
 omap:
 - locking fixes
 
 bochs:
 - convert to gem/shmem from simpledrm
 
 v3d:
 - support big/super pages
 - add gemfs
 
 vc4:
 - BCM2712 support refactoring
 - add YUV444 format support
 
 udmabuf:
 - folio related fixes
 
 nouveau:
 - add panic support on nv50+
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Merge tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel

Pull drm updates from Dave Airlie:
 "There's a lot of rework, the panic helper support is being added to
  more drivers, v3d gets support for HW superpages, scheduler
  documentation, drm client and video aperture reworks, some new
  MAINTAINERS added, amdgpu has the usual lots of IP refactors, Intel
  has some Pantherlake enablement and xe is getting some SRIOV bits, but
  just lots of stuff everywhere.

  core:
   - split DSC helpers from DP helpers
   - clang build fixes for drm/mm test
   - drop simple pipeline support for gem vram
   - document submission error signaling
   - move drm_rect to drm core module from kms helper
   - add default client setup to most drivers
   - move to video aperture helpers instead of drm ones

  tests:
   - new framebuffer tests

  ttm:
   - remove swapped and pinned BOs from TTM lru

  panic:
   - fix uninit spinlock
   - add ABGR2101010 support

  bridge:
   - add TI TDP158 support
   - use standard PM OPS

  dma-fence:
   - use read_trylock instead of read_lock to help lockdep

  scheduler:
   - add errno to sched start to report different errors
   - add locking to drm_sched_entity_modify_sched
   - improve documentation

  xe:
   - add drm_line_printer
   - lots of refactoring
   - Enable Xe2 + PES disaggregation
   - add new ARL PCI ID
   - SRIOV development work
   - fix exec unnecessary implicit fence
   - define and parse OA sync props
   - forcewake refactoring

  i915:
   - Enable BMG/LNL ultra joiner
   - Enable 10bpx + CCS scanout on ICL+, fp16/CCS on TGL+
   - use DSB for plane/color mgmt
   - Arrow lake PCI IDs
   - lots of i915/xe display refactoring
   - enable PXP GuC autoteardown
   - Pantherlake (PTL) Xe3 LPD display enablement
   - Allow fastset HDR infoframe changes
   - write DP source OUI for non-eDP sinks
   - share PCI IDs between i915 and xe

  amdgpu:
   - SDMA queue reset support
   - SMU 13.0.6, JPEG 4.0.3 updates
   - Initial runtime repartitioning support
   - rework IP structs for multiple IP instances
   - Fetch EDID from _DDC if available
   - SMU13 zero rpm user control
   - lots of fixes/cleanups

  amdkfd:
   - Increase event FIFO size
   - add topology cap flag for per queue reset

  msm:
   - DPU:
      - SA8775P support
      - (disabled by default) MSM8917, MSM8937, MSM8953 and MSM8996 support
      - Enable large framebuffer support
      - Drop MSM8998 and SDM845
   - DP:
      - SA8775P support
   - GPU:
      - a7xx preemption support
      - Adreno A663 support

  ast:
   - warn about unsupported TX chips

  ivpu:
   - add coredump
   - add pantherlake support

  rockchip:
   - 4K@60Hz display enablement
   - generate pll programming tables

  panthor:
   - add timestamp query API
   - add realtime group priority
   - add fdinfo support

  etnaviv:
   - improve handling of DMA address limits
   - improve GPU hangcheck

  exynos:
   - Decon Exynos7870 support

  mediatek:
   - add OF graph support

  omap:
   - locking fixes

  bochs:
   - convert to gem/shmem from simpledrm

  v3d:
   - support big/super pages
   - add gemfs

  vc4:
   - BCM2712 support refactoring
   - add YUV444 format support

  udmabuf:
   - folio related fixes

  nouveau:
   - add panic support on nv50+"

* tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel: (1583 commits)
  drm/xe/guc: Fix dereference before NULL check
  drm/amd: Fix initialization mistake for NBIO 7.7.0
  Revert "drm/amd/display: parse umc_info or vram_info based on ASIC"
  drm/amd/display: Fix failure to read vram info due to static BP_RESULT
  drm/amdgpu: enable GTT fallback handling for dGPUs only
  drm/amd/amdgpu: limit single process inside MES
  drm/fourcc: add AMD_FMT_MOD_TILE_GFX9_4K_D_X
  drm/amdgpu/mes12: correct kiq unmap latency
  drm/amdgpu: Support vcn and jpeg error info parsing
  drm/amd : Update MES API header file for v11 & v12
  drm/amd/amdkfd: add/remove kfd queues on start/stop KFD scheduling
  drm/amdkfd: change kfd process kref count at creation
  drm/amdgpu: Cleanup shift coding style
  drm/amd/amdgpu: Increase MES log buffer to dump mes scratch data
  drm/amdgpu: Implement virt req_ras_err_count
  drm/amdgpu: VF Query RAS Caps from Host if supported
  drm/amdgpu: Add msg handlers for SRIOV RAS Telemetry
  drm/amdgpu: Update SRIOV Exchange Headers for RAS Telemetry Support
  drm/amd/display: 3.2.309
  drm/amd/display: Adjust VSDB parser for replay feature
  ...
2024-11-21 14:56:17 -08:00
Linus Torvalds
341d041daa iommufd 6.13 merge window pull
Several new features and uAPI for iommufd:
 
 - IOMMU_IOAS_MAP_FILE allows passing in a file descriptor as the backing
   memory for an iommu mapping. To date VFIO/iommufd have used VMA's and
   pin_user_pages(), this now allows using memfds and memfd_pin_folios().
   Notably this creates a pure folio path from the memfd to the iommu page
   table where memory is never broken down to PAGE_SIZE.
 
 - IOMMU_IOAS_CHANGE_PROCESS moves the pinned page accounting between two
   processes. Combined with the above this allows iommufd to support a VMM
   re-start using exec() where something like qemu would exec() a new
   version of itself and fd pass the memfds/iommufd/etc to the new
   process. The memfd allows DMA access to the memory to continue while
   the new process is getting setup, and the CHANGE_PROCESS updates all
   the accounting.
 
 - Support for fault reporting to userspace on non-PRI HW, such as ARM
   stall-mode embedded devices.
 
 - IOMMU_VIOMMU_ALLOC introduces the concept of a HW/driver backed virtual
   iommu. This will be used by VMMs to access hardware features that are
   contained with in a VM. The first use is to inform the kernel of the
   virtual SID to physical SID mapping when issuing SID based invalidation
   on ARM. Further uses will tie HW features that are directly accessed by
   the VM, such as invalidation queue assignment and others.
 
 - IOMMU_VDEVICE_ALLOC informs the kernel about the mapping of virtual
   device to physical device within a VIOMMU. Minimially this is used to
   translate VM issued cache invalidation commands from virtual to physical
   device IDs.
 
 - Enhancements to IOMMU_HWPT_INVALIDATE and IOMMU_HWPT_ALLOC to work with
   the VIOMMU
 
 - ARM SMMuv3 support for nested translation. Using the VIOMMU and VDEVICE
   the driver can model this HW's behavior for nested translation. This
   includes a shared branch from Will.
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd

Pull iommufd updates from Jason Gunthorpe:
 "Several new features and uAPI for iommufd:

   - IOMMU_IOAS_MAP_FILE allows passing in a file descriptor as the
     backing memory for an iommu mapping. To date VFIO/iommufd have used
     VMA's and pin_user_pages(), this now allows using memfds and
     memfd_pin_folios(). Notably this creates a pure folio path from the
     memfd to the iommu page table where memory is never broken down to
     PAGE_SIZE.

   - IOMMU_IOAS_CHANGE_PROCESS moves the pinned page accounting between
     two processes. Combined with the above this allows iommufd to
     support a VMM re-start using exec() where something like qemu would
     exec() a new version of itself and fd pass the memfds/iommufd/etc
     to the new process. The memfd allows DMA access to the memory to
     continue while the new process is getting setup, and the
     CHANGE_PROCESS updates all the accounting.

   - Support for fault reporting to userspace on non-PRI HW, such as ARM
     stall-mode embedded devices.

   - IOMMU_VIOMMU_ALLOC introduces the concept of a HW/driver backed
     virtual iommu. This will be used by VMMs to access hardware
     features that are contained with in a VM. The first use is to
     inform the kernel of the virtual SID to physical SID mapping when
     issuing SID based invalidation on ARM. Further uses will tie HW
     features that are directly accessed by the VM, such as invalidation
     queue assignment and others.

   - IOMMU_VDEVICE_ALLOC informs the kernel about the mapping of virtual
     device to physical device within a VIOMMU. Minimially this is used
     to translate VM issued cache invalidation commands from virtual to
     physical device IDs.

   - Enhancements to IOMMU_HWPT_INVALIDATE and IOMMU_HWPT_ALLOC to work
     with the VIOMMU

   - ARM SMMuv3 support for nested translation. Using the VIOMMU and
     VDEVICE the driver can model this HW's behavior for nested
     translation. This includes a shared branch from Will"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (51 commits)
  iommu/arm-smmu-v3: Import IOMMUFD module namespace
  iommufd: IOMMU_IOAS_CHANGE_PROCESS selftest
  iommufd: Add IOMMU_IOAS_CHANGE_PROCESS
  iommufd: Lock all IOAS objects
  iommufd: Export do_update_pinned
  iommu/arm-smmu-v3: Support IOMMU_HWPT_INVALIDATE using a VIOMMU object
  iommu/arm-smmu-v3: Allow ATS for IOMMU_DOMAIN_NESTED
  iommu/arm-smmu-v3: Use S2FWB for NESTED domains
  iommu/arm-smmu-v3: Support IOMMU_DOMAIN_NESTED
  iommu/arm-smmu-v3: Support IOMMU_VIOMMU_ALLOC
  Documentation: userspace-api: iommufd: Update vDEVICE
  iommufd/selftest: Add vIOMMU coverage for IOMMU_HWPT_INVALIDATE ioctl
  iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_CACHE test command
  iommufd/selftest: Add mock_viommu_cache_invalidate
  iommufd/viommu: Add iommufd_viommu_find_dev helper
  iommu: Add iommu_copy_struct_from_full_user_array helper
  iommufd: Allow hwpt_id to carry viommu_id for IOMMU_HWPT_INVALIDATE
  iommu/viommu: Add cache_invalidate to iommufd_viommu_ops
  iommufd/selftest: Add IOMMU_VDEVICE_ALLOC test coverage
  iommufd/viommu: Add IOMMUFD_OBJ_VDEVICE and IOMMU_VDEVICE_ALLOC ioctl
  ...
2024-11-21 12:40:50 -08:00
Linus Torvalds
2dde263d81 \n
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Merge tag 'fsnotify_for_v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull fsnotify updates from Jan Kara:
 "A couple of smaller random fsnotify fixes"

* tag 'fsnotify_for_v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fsnotify: Fix ordering of iput() and watched_objects decrement
  fsnotify: fix sending inotify event with unexpected filename
  fanotify: allow reporting errors on failure to open fd
  fsnotify, lsm: Decouple fsnotify from lsm
2024-11-21 09:55:45 -08:00
Linus Torvalds
c01f664e4c \n
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Merge tag 'reiserfs_delete' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull reiserfs removal from Jan Kara:
 "The deprecation period of reiserfs is ending at the end of this year
  so it is time to remove it"

* tag 'reiserfs_delete' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  reiserfs: The last commit
2024-11-21 09:50:18 -08:00
Linus Torvalds
fcc79e1714 Networking changes for 6.13.
The most significant set of changes is the per netns RTNL. The new
 behavior is disabled by default, regression risk should be contained.
 
 Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
 default value from PTP_1588_CLOCK_KVM, as the first is intended to be
 a more reliable replacement for the latter.
 
 Core
 ----
 
  - Started a very large, in-progress, effort to make the RTNL lock
    scope per network-namespace, thus reducing the lock contention
    significantly in the containerized use-case, comprising:
    - RCU-ified some relevant slices of the FIB control path
    - introduce basic per netns locking helpers
    - namespacified the IPv4 address hash table
    - remove rtnl_register{,_module}() in favour of rtnl_register_many()
    - refactor rtnl_{new,del,set}link() moving as much validation as
      possible out of RTNL lock
    - convert all phonet doit() and dumpit() handlers to RCU
    - convert IPv4 addresses manipulation to per-netns RTNL
    - convert virtual interface creation to per-netns RTNL
    the per-netns lock infra is guarded by the CONFIG_DEBUG_NET_SMALL_RTNL
    knob, disabled by default ad interim.
 
  - Introduce NAPI suspension, to efficiently switching between busy
    polling (NAPI processing suspended) and normal processing.
 
  - Migrate the IPv4 routing input, output and control path from direct
    ToS usage to DSCP macros. This is a work in progress to make ECN
    handling consistent and reliable.
 
  - Add drop reasons support to the IPv4 rotue input path, allowing
    better introspection in case of packets drop.
 
  - Make FIB seqnum lockless, dropping RTNL protection for read
    access.
 
  - Make inet{,v6} addresses hashing less predicable.
 
  - Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
    and timestamps
 
 Things we sprinkled into general kernel code
 --------------------------------------------
 
  - Add small file operations for debugfs, to reduce the struct ops size.
 
  - Refactoring and optimization for the implementation of page_frag API,
    This is a preparatory work to consolidate the page_frag
    implementation.
 
 Netfilter
 ---------
 
  - Optimize set element transactions to reduce memory consumption
 
  - Extended netlink error reporting for attribute parser failure.
 
  - Make legacy xtables configs user selectable, giving users
    the option to configure iptables without enabling any other config.
 
  - Address a lot of false-positive RCU issues, pointed by recent
    CI improvements.
 
 BPF
 ---
 
  - Put xsk sockets on a struct diet and add various cleanups. Overall,
    this helps to bump performance by 12% for some workloads.
 
  - Extend BPF selftests to increase coverage of XDP features in
    combination with BPF cpumap.
 
  - Optimize and homogenize bpf_csum_diff helper for all archs and also
    add a batch of new BPF selftests for it.
 
  - Extend netkit with an option to delegate skb->{mark,priority}
    scrubbing to its BPF program.
 
  - Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
    programs.
 
 Protocols
 ---------
 
  - Introduces 4-tuple hash for connected udp sockets, speeding-up
    significantly connected sockets lookup.
 
  - Add a fastpath for some TCP timers that usually expires after close,
    the socket lock contention.
 
  - Add inbound and outbound xfrm state caches to speed up state lookups.
 
  - Avoid sending MPTCP advertisements on stale subflows, reducing
    risks on loosing them.
 
  - Make neighbours table flushing more scalable, maintaining per device
    neigh lists.
 
 Driver API
 ----------
 
  - Introduce a unified interface to configure transmission H/W shaping,
    and expose it to user-space via generic-netlink.
 
  - Add support for per-NAPI config via netlink. This makes napi
    configuration persistent across queues removal and re-creation.
    Requires driver updates, currently supported drivers are:
    nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
 
  - Add ethtool support for writing SFP / PHY firmware blocks.
 
  - Track RSS context allocation from ethtool core.
 
  - Implement support for mirroring to DSA CPU port, via TC mirror
    offload.
 
  - Consolidate FDB updates notification, to avoid duplicates on
    device-specific entries.
 
  - Expose DPLL clock quality level to the user-space.
 
  - Support master-slave PHY config via device tree.
 
 Tests and tooling
 -----------------
 
  - forwarding: introduce deferred commands, to simplify
    the cleanup phase
 
 Drivers
 -------
 
  - Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
    Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
    IRQs and queues to NAPI IDs, allowing busy polling and better
    introspection.
 
  - Ethernet high-speed NICs:
    - nVidia/Mellanox:
      - mlx5:
        - a large refactor to implement support for cross E-Switch
          scheduling
        - refactor H/W conter management to let it scale better
        - H/W GRO cleanups
    - Intel (100G, ice)::
      - adds support for ethtool reset
      - implement support for per TX queue H/W shaping
    - AMD/Solarflare:
      - implement per device queue stats support
    - Broadcom (bnxt):
      - improve wildcard l4proto on IPv4/IPv6 ntuple rules
    - Marvell Octeon:
      - Adds representor support for each Resource Virtualization Unit
        (RVU) device.
    - Hisilicon:
      - adds support for the BMC Gigabit Ethernet
    - IBM (EMAC):
      - driver cleanup and modernization
    - Cisco (VIC):
      - raise the queues number limit to 256
 
  - Ethernet virtual:
    - Google vNIC:
      - implements page pool support
    - macsec:
      - inherit lower device's features and TSO limits when offloading
    - virtio_net:
      - enable premapped mode by default
      - support for XDP socket(AF_XDP) zerocopy TX
    - wireguard:
      - set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
        packets.
 
  - Ethernet NICs embedded and virtual:
    - Broadcom ASP:
      - enable software timestamping
    - Freescale:
      - add enetc4 PF driver
    - MediaTek: Airoha SoC:
      - implement BQL support
    - RealTek r8169:
      - enable TSO by default on r8168/r8125
      - implement extended ethtool stats
    - Renesas AVB:
      - enable TX checksum offload
    - Synopsys (stmmac):
      - support header splitting for vlan tagged packets
      - move common code for DWMAC4 and DWXGMAC into a separate FPE
        module.
      - Add the dwmac driver support for T-HEAD TH1520 SoC
    - Synopsys (xpcs):
      - driver refactor and cleanup
    - TI:
      - icssg_prueth: add VLAN offload support
    - Xilinx emaclite:
      - adds clock support
 
  - Ethernet switches:
    - Microchip:
      - implement support for the lan969x Ethernet switch family
      - add LAN9646 switch support to KSZ DSA driver
 
  - Ethernet PHYs:
    - Marvel: 88q2x: enable auto negotiation
    - Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
 
  - PTP:
    - Add support for the Amazon virtual clock device
    - Add PtP driver for s390 clocks
 
  - WiFi:
    - mac80211
      - EHT 1024 aggregation size for transmissions
      - new operation to indicate that a new interface is to be added
      - support radio separation of multi-band devices
      - move wireless extension spy implementation to libiw
    - Broadcom:
      - brcmfmac: optional LPO clock support
    - Microchip:
      - add support for Atmel WILC3000
    - Qualcomm (ath12k):
      - firmware coredump collection support
      - add debugfs support for a multitude of statistics
    - Qualcomm (ath5k):
      -  Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
    - Realtek:
      - rtw88: 8821au and 8812au USB adapters support
      - rtw89: add thermal protection
      - rtw89: fine tune BT-coexsitence to improve user experience
      - rtw89: firmware secure boot for WiFi 6 chip
 
  - Bluetooth
      - add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
        0x13d3:0x3623
      - add Realtek RTL8852BE support for id Foxconn 0xe123
      - add MediaTek MT7920 support for wireless module ids
      - btintel_pcie: add handshake between driver and firmware
      - btintel_pcie: add recovery mechanism
      - btnxpuart: add GPIO support to power save feature
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "The most significant set of changes is the per netns RTNL. The new
  behavior is disabled by default, regression risk should be contained.

  Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
  default value from PTP_1588_CLOCK_KVM, as the first is intended to be
  a more reliable replacement for the latter.

  Core:

   - Started a very large, in-progress, effort to make the RTNL lock
     scope per network-namespace, thus reducing the lock contention
     significantly in the containerized use-case, comprising:
       - RCU-ified some relevant slices of the FIB control path
       - introduce basic per netns locking helpers
       - namespacified the IPv4 address hash table
       - remove rtnl_register{,_module}() in favour of
         rtnl_register_many()
       - refactor rtnl_{new,del,set}link() moving as much validation as
         possible out of RTNL lock
       - convert all phonet doit() and dumpit() handlers to RCU
       - convert IPv4 addresses manipulation to per-netns RTNL
       - convert virtual interface creation to per-netns RTNL
     the per-netns lock infrastructure is guarded by the
     CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.

   - Introduce NAPI suspension, to efficiently switching between busy
     polling (NAPI processing suspended) and normal processing.

   - Migrate the IPv4 routing input, output and control path from direct
     ToS usage to DSCP macros. This is a work in progress to make ECN
     handling consistent and reliable.

   - Add drop reasons support to the IPv4 rotue input path, allowing
     better introspection in case of packets drop.

   - Make FIB seqnum lockless, dropping RTNL protection for read access.

   - Make inet{,v6} addresses hashing less predicable.

   - Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
     and timestamps

  Things we sprinkled into general kernel code:

   - Add small file operations for debugfs, to reduce the struct ops
     size.

   - Refactoring and optimization for the implementation of page_frag
     API, This is a preparatory work to consolidate the page_frag
     implementation.

  Netfilter:

   - Optimize set element transactions to reduce memory consumption

   - Extended netlink error reporting for attribute parser failure.

   - Make legacy xtables configs user selectable, giving users the
     option to configure iptables without enabling any other config.

   - Address a lot of false-positive RCU issues, pointed by recent CI
     improvements.

  BPF:

   - Put xsk sockets on a struct diet and add various cleanups. Overall,
     this helps to bump performance by 12% for some workloads.

   - Extend BPF selftests to increase coverage of XDP features in
     combination with BPF cpumap.

   - Optimize and homogenize bpf_csum_diff helper for all archs and also
     add a batch of new BPF selftests for it.

   - Extend netkit with an option to delegate skb->{mark,priority}
     scrubbing to its BPF program.

   - Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
     programs.

  Protocols:

   - Introduces 4-tuple hash for connected udp sockets, speeding-up
     significantly connected sockets lookup.

   - Add a fastpath for some TCP timers that usually expires after
     close, the socket lock contention.

   - Add inbound and outbound xfrm state caches to speed up state
     lookups.

   - Avoid sending MPTCP advertisements on stale subflows, reducing
     risks on loosing them.

   - Make neighbours table flushing more scalable, maintaining per
     device neigh lists.

  Driver API:

   - Introduce a unified interface to configure transmission H/W
     shaping, and expose it to user-space via generic-netlink.

   - Add support for per-NAPI config via netlink. This makes napi
     configuration persistent across queues removal and re-creation.
     Requires driver updates, currently supported drivers are:
     nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.

   - Add ethtool support for writing SFP / PHY firmware blocks.

   - Track RSS context allocation from ethtool core.

   - Implement support for mirroring to DSA CPU port, via TC mirror
     offload.

   - Consolidate FDB updates notification, to avoid duplicates on
     device-specific entries.

   - Expose DPLL clock quality level to the user-space.

   - Support master-slave PHY config via device tree.

  Tests and tooling:

   - forwarding: introduce deferred commands, to simplify the cleanup
     phase

  Drivers:

   - Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
     Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
     IRQs and queues to NAPI IDs, allowing busy polling and better
     introspection.

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - mlx5:
           - a large refactor to implement support for cross E-Switch
             scheduling
           - refactor H/W conter management to let it scale better
           - H/W GRO cleanups
      - Intel (100G, ice)::
         - add support for ethtool reset
         - implement support for per TX queue H/W shaping
      - AMD/Solarflare:
         - implement per device queue stats support
      - Broadcom (bnxt):
         - improve wildcard l4proto on IPv4/IPv6 ntuple rules
      - Marvell Octeon:
         - Add representor support for each Resource Virtualization Unit
           (RVU) device.
      - Hisilicon:
         - add support for the BMC Gigabit Ethernet
      - IBM (EMAC):
         - driver cleanup and modernization
      - Cisco (VIC):
         - raise the queues number limit to 256

   - Ethernet virtual:
      - Google vNIC:
         - implement page pool support
      - macsec:
         - inherit lower device's features and TSO limits when
           offloading
      - virtio_net:
         - enable premapped mode by default
         - support for XDP socket(AF_XDP) zerocopy TX
      - wireguard:
         - set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
           packets.

   - Ethernet NICs embedded and virtual:
      - Broadcom ASP:
         - enable software timestamping
      - Freescale:
         - add enetc4 PF driver
      - MediaTek: Airoha SoC:
         - implement BQL support
      - RealTek r8169:
         - enable TSO by default on r8168/r8125
         - implement extended ethtool stats
      - Renesas AVB:
         - enable TX checksum offload
      - Synopsys (stmmac):
         - support header splitting for vlan tagged packets
         - move common code for DWMAC4 and DWXGMAC into a separate FPE
           module.
         - add dwmac driver support for T-HEAD TH1520 SoC
      - Synopsys (xpcs):
         - driver refactor and cleanup
      - TI:
         - icssg_prueth: add VLAN offload support
      - Xilinx emaclite:
         - add clock support

   - Ethernet switches:
      - Microchip:
         - implement support for the lan969x Ethernet switch family
         - add LAN9646 switch support to KSZ DSA driver

   - Ethernet PHYs:
      - Marvel: 88q2x: enable auto negotiation
      - Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2

   - PTP:
      - Add support for the Amazon virtual clock device
      - Add PtP driver for s390 clocks

   - WiFi:
      - mac80211
         - EHT 1024 aggregation size for transmissions
         - new operation to indicate that a new interface is to be added
         - support radio separation of multi-band devices
         - move wireless extension spy implementation to libiw
      - Broadcom:
         - brcmfmac: optional LPO clock support
      - Microchip:
         - add support for Atmel WILC3000
      - Qualcomm (ath12k):
         - firmware coredump collection support
         - add debugfs support for a multitude of statistics
      - Qualcomm (ath5k):
         -  Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
      - Realtek:
         - rtw88: 8821au and 8812au USB adapters support
         - rtw89: add thermal protection
         - rtw89: fine tune BT-coexsitence to improve user experience
         - rtw89: firmware secure boot for WiFi 6 chip

   - Bluetooth
      - add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
        0x13d3:0x3623
      - add Realtek RTL8852BE support for id Foxconn 0xe123
      - add MediaTek MT7920 support for wireless module ids
      - btintel_pcie: add handshake between driver and firmware
      - btintel_pcie: add recovery mechanism
      - btnxpuart: add GPIO support to power save feature"

* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits)
  mm: page_frag: fix a compile error when kernel is not compiled
  Documentation: tipc: fix formatting issue in tipc.rst
  selftests: nic_performance: Add selftest for performance of NIC driver
  selftests: nic_link_layer: Add selftest case for speed and duplex states
  selftests: nic_link_layer: Add link layer selftest for NIC driver
  bnxt_en: Add FW trace coredump segments to the coredump
  bnxt_en: Add a new ethtool -W dump flag
  bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr()
  bnxt_en: Add functions to copy host context memory
  bnxt_en: Do not free FW log context memory
  bnxt_en: Manage the FW trace context memory
  bnxt_en: Allocate backing store memory for FW trace logs
  bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem()
  bnxt_en: Refactor bnxt_free_ctx_mem()
  bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type
  bnxt_en: Update firmware interface spec to 1.10.3.85
  selftests/bpf: Add some tests with sockmap SK_PASS
  bpf: fix recursive lock when verdict program return SK_PASS
  wireguard: device: support big tcp GSO
  wireguard: selftests: load nf_conntrack if not present
  ...
2024-11-21 08:28:08 -08:00
Linus Torvalds
6e95ef0258 bpf-next-bpf-next-6.13
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Merge tag 'bpf-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:

 - Add BPF uprobe session support (Jiri Olsa)

 - Optimize uprobe performance (Andrii Nakryiko)

 - Add bpf_fastcall support to helpers and kfuncs (Eduard Zingerman)

 - Avoid calling free_htab_elem() under hash map bucket lock (Hou Tao)

 - Prevent tailcall infinite loop caused by freplace (Leon Hwang)

 - Mark raw_tracepoint arguments as nullable (Kumar Kartikeya Dwivedi)

 - Introduce uptr support in the task local storage map (Martin KaFai
   Lau)

 - Stringify errno log messages in libbpf (Mykyta Yatsenko)

 - Add kmem_cache BPF iterator for perf's lock profiling (Namhyung Kim)

 - Support BPF objects of either endianness in libbpf (Tony Ambardar)

 - Add ksym to struct_ops trampoline to fix stack trace (Xu Kuohai)

 - Introduce private stack for eligible BPF programs (Yonghong Song)

 - Migrate samples/bpf tests to selftests/bpf test_progs (Daniel T. Lee)

 - Migrate test_sock to selftests/bpf test_progs (Jordan Rife)

* tag 'bpf-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (152 commits)
  libbpf: Change hash_combine parameters from long to unsigned long
  selftests/bpf: Fix build error with llvm 19
  libbpf: Fix memory leak in bpf_program__attach_uprobe_multi
  bpf: use common instruction history across all states
  bpf: Add necessary migrate_disable to range_tree.
  bpf: Do not alloc arena on unsupported arches
  selftests/bpf: Set test path for token/obj_priv_implicit_token_envvar
  selftests/bpf: Add a test for arena range tree algorithm
  bpf: Introduce range_tree data structure and use it in bpf arena
  samples/bpf: Remove unused variable in xdp2skb_meta_kern.c
  samples/bpf: Remove unused variables in tc_l2_redirect_kern.c
  bpftool: Cast variable `var` to long long
  bpf, x86: Propagate tailcall info only for subprogs
  bpf: Add kernel symbol for struct_ops trampoline
  bpf: Use function pointers count as struct_ops links count
  bpf: Remove unused member rcu from bpf_struct_ops_map
  selftests/bpf: Add struct_ops prog private stack tests
  bpf: Support private stack for struct_ops progs
  selftests/bpf: Add tracing prog private stack tests
  bpf, x86: Support private stack in jit
  ...
2024-11-21 08:11:04 -08:00