Alexey Kardashevskiy 2157e7b82f vfio: powerpc/spapr: Register memory and define IOMMU v2 ... The existing implementation accounts the whole DMA window in the locked_vm counter. This is going to be worse with multiple containers and huge DMA windows. Also, real-time accounting would requite additional tracking of accounted pages due to the page size difference - IOMMU uses 4K pages and system uses 4K or 64K pages. Another issue is that actual pages pinning/unpinning happens on every DMA map/unmap request. This does not affect the performance much now as we spend way too much time now on switching context between guest/userspace/host but this will start to matter when we add in-kernel DMA map/unmap acceleration. This introduces a new IOMMU type for SPAPR - VFIO_SPAPR_TCE_v2_IOMMU. New IOMMU deprecates VFIO_IOMMU_ENABLE/VFIO_IOMMU_DISABLE and introduces 2 new ioctls to register/unregister DMA memory - VFIO_IOMMU_SPAPR_REGISTER_MEMORY and VFIO_IOMMU_SPAPR_UNREGISTER_MEMORY - which receive user space address and size of a memory region which needs to be pinned/unpinned and counted in locked_vm. New IOMMU splits physical pages pinning and TCE table update into 2 different operations. It requires: 1) guest pages to be registered first 2) consequent map/unmap requests to work only with pre-registered memory. For the default single window case this means that the entire guest (instead of 2GB) needs to be pinned before using VFIO. When a huge DMA window is added, no additional pinning will be required, otherwise it would be guest RAM + 2GB. The new memory registration ioctls are not supported by VFIO_SPAPR_TCE_IOMMU. Dynamic DMA window and in-kernel acceleration will require memory to be preregistered in order to work. The accounting is done per the user process. This advertises v2 SPAPR TCE IOMMU and restricts what the userspace can do with v1 or v2 IOMMUs. In order to support memory pre-registration, we need a way to track the use of every registered memory region and only allow unregistration if a region is not in use anymore. So we need a way to tell from what region the just cleared TCE was from. This adds a userspace view of the TCE table into iommu_table struct. It contains userspace address, one per TCE entry. The table is only allocated when the ownership over an IOMMU group is taken which means it is only used from outside of the powernv code (such as VFIO). As v2 IOMMU supports IODA2 and pre-IODA2 IOMMUs (which do not support DDW API), this creates a default DMA window for IODA2 for consistency. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> [aw: for the vfio related changes] Acked-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2015-06-11 15:16:55 +10:00
..
android	android: uapi: binder.h	2014-10-20 10:30:15 +08:00
byteorder
caif
can	can: introduce new raw socket option to join the given CAN filters	2015-04-01 11:28:22 +02:00
cifs
dvb
genwqe	GenWQE: Update author information	2014-09-23 23:15:46 -07:00
hdlc
hsi	HSI: cmt_speech: Add cmt-speech driver	2015-03-31 22:14:04 +02:00
iio	iio: Export userspace IIO headers	2015-02-14 17:05:03 +00:00
isdn
mmc
netfilter	netfilter: nft_dynset: dynamic stateful expression instantiation	2015-04-13 20:19:55 +02:00
netfilter_arp	uapi: netfilter_arp: use __u8 instead of u_int8_t	2014-08-20 15:13:08 +02:00
netfilter_bridge	uapi: ebtables: don't include linux/if.h	2015-04-13 20:08:38 +02:00
netfilter_ipv4
netfilter_ipv6
nfsd	nfsd: eliminate NFSD_DEBUG	2015-04-21 16:16:02 -04:00
raid	Add new disk to clustered array	2015-02-23 09:59:07 -06:00
spi
sunrpc
tc_act	act_bpf: add initial eBPF support for actions	2015-03-20 19:10:44 -04:00
tc_ematch
usb	usb: gadget: ffs: add eventfd notification about ffs events	2015-01-27 09:34:59 -06:00
wimax
a.out.h
acct.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
am437x-vpfe.h	[media] am437x: include linux/videodev2.h for expanding BASE_VIDIOC_PRIVATE	2015-04-02 18:10:35 -03:00
apm_bios.h
arcfb.h
atalk.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_tcp.h
atm_zatm.h
atm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
audit.h	powerpc updates for 3.19 batch 2	2014-12-19 12:57:45 -08:00
auto_fs4.h
auto_fs.h
auxvec.h
ax25.h
b1lli.h
baycom.h
bcache.h
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
blkpg.h
blktrace_api.h
bpf_common.h	net: filter: move common defines into bpf_common.h	2014-10-14 16:06:45 -04:00
bpf.h	bpf: fix bpf helpers to use skb->mac_header relative offsets	2015-04-16 14:08:49 -04:00
bpqether.h
bsg.h
btrfs.h	Btrfs: Remove unnecessary placeholder in btrfs_err_code	2015-02-02 19:25:51 -08:00
can.h
capability.h
capi.h
cciss_defs.h
cciss_ioctl.h
cdrom.h
cgroupstats.h
chio.h
cm4000_cs.h
cn_proc.h
coda_psdev.h
coda.h
coff.h
connector.h
const.h
cramfs_fs.h
cuda.h
cyclades.h
cycx_cfm.h
dcbnl.h	net/dcb: Add IEEE QCN attribute	2015-03-06 21:50:02 -05:00
dccp.h
dlm_device.h
dlm_netlink.h
dlm_plock.h
dlm.h
dlmconstants.h	dlm: adopt orphan locks	2014-11-19 14:48:02 -06:00
dm-ioctl.h	dm: add full blk-mq support to request-based DM	2015-04-15 12:10:16 -04:00
dm-log-userspace.h
dn.h
dqblk_xfs.h
edd.h
efs_fs_sb.h
elf-em.h	Add ELF machine define for Nios2	2014-12-08 12:55:57 +08:00
elf-fdpic.h
elf.h	arm64: ptrace: add NT_ARM_SYSTEM_CALL regset	2014-11-28 10:19:49 +00:00
elfcore.h
errno.h
errqueue.h	net-timestamp: ACK timestamp for bytestreams	2014-08-05 16:35:54 -07:00
ethtool.h	ethtool: rename reserved1 memeber in ethtool_drvinfo for expansion ROM version	2015-02-09 14:07:54 -08:00
eventpoll.h
fadvise.h
falloc.h	fs: Add support FALLOC_FL_INSERT_RANGE for fallocate	2015-03-25 15:07:05 +11:00
fanotify.h
fb.h
fcntl.h	shm: add sealing API	2014-08-08 15:57:31 -07:00
fd.h
fdreg.h
fib_rules.h
fiemap.h
filter.h	bpf: fix bpf helpers to use skb->mac_header relative offsets	2015-04-16 14:08:49 -04:00
firewire-cdev.h
firewire-constants.h
flat.h
fou.h	fou: implement FOU_CMD_GET	2015-04-12 21:25:13 -04:00
fs.h	vfs: add support for a lazytime mount option	2015-02-05 02:45:00 -05:00
fsl_hypervisor.h
fuse.h
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h
gigaset_dev.h
hash_info.h
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h
hpet.h
hsr_netlink.h
hw_breakpoint.h
hyperv.h	Drivers: hv: util: make struct hv_do_fcopy match Hyper-V host messages	2014-11-07 10:21:44 -08:00
hysdn_if.h
i2c-dev.h
i2c.h
i2o-dev.h
i8k.h
icmp.h
icmpv6.h
if_addr.h	ipv6: introduce IFA_F_STABLE_PRIVACY flag	2015-03-23 22:12:09 -04:00
if_addrlabel.h
if_alg.h	crypto: af_alg - add user space interface for AEAD	2014-12-05 23:56:55 +08:00
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h	bridge: support for multiple vlans and vlan ranges in setlink and dellink requests	2015-01-12 16:47:04 -05:00
if_cablemodem.h
if_eql.h
if_ether.h	net: dsa: reduce number of protocol hooks	2014-08-27 22:59:39 -07:00
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h	if_link: Add an additional parameter to ifla_vf_info for RSS querying	2015-04-10 21:57:22 -07:00
if_ltalk.h
if_packet.h	af_packet: pass checksum validation status to the user	2015-03-23 22:01:28 -04:00
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h
if_slip.h
if_team.h
if_tun.h	if_tun: drop broken IFF_VNET_LE	2014-12-16 11:19:42 -05:00
if_tunnel.h	gue: TX support for using remote checksum offload option	2014-11-05 16:30:03 -05:00
if_vlan.h
if_x25.h
if.h
igmp.h
in6.h	in6: fix conflict with glibc	2014-12-22 16:12:36 -05:00
in_route.h
in.h	ip: Add offset parameter to ip_cmsg_recv	2015-01-05 22:44:46 -05:00
inet_diag.h	net: tcp: add DCTCP congestion control algorithm	2014-09-29 00:13:10 -04:00
inotify.h
input.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-04-14 18:25:15 -07:00
ioctl.h
ip6_tunnel.h
ip_vs.h	ipvs: use 64-bit rates in stats	2015-02-09 16:59:03 +09:00
ip.h
ipc.h
ipmi_msgdefs.h
ipmi.h
ipsec.h
ipv6_route.h
ipv6.h	ipv6: introduce secret_stable to ipv6_devconf	2015-03-23 22:12:08 -04:00
ipx.h
irda.h
irqnr.h
isdn_divertif.h
isdn_ppp.h
isdn.h
isdnif.h
iso_fs.h
ivtv.h
ivtvfb.h
ixjuser.h
jffs2.h
joystick.h
Kbuild	Some virtio internal cleanups, a new virtio device "virtio input", and	2015-04-22 10:55:06 -07:00
kcmp.h	kcmp: Move kcmp.h into uapi	2014-12-02 13:52:53 -07:00
kd.h
kdev_t.h
kernel-page-flags.h	mm:add KPF_ZERO_PAGE flag for /proc/kpageflags	2015-02-11 17:06:00 -08:00
kernel.h
kernelcapi.h
kexec.h	kexec: Fix make headers_check	2015-02-17 14:34:51 -08:00
keyboard.h
keyctl.h
kfd_ioctl.h	drm/amdkfd: reformat IOCTL definitions to drm-style	2015-01-06 19:44:36 +02:00
kvm_para.h
kvm.h	KVM: PPC: Book3S HV: Add fast real-mode H_RANDOM implementation.	2015-04-21 15:21:29 +02:00
l2tp.h	l2tp : multicast notification to the registered listeners	2014-12-31 14:17:20 -05:00
libc-compat.h	ipv6: fix redefinition of in6_pktinfo and ip6_mtuinfo	2015-01-08 19:29:11 -08:00
limits.h
llc.h
loop.h
lp.h
magic.h	tracefs: Add new tracefs file system	2015-02-03 12:48:40 -05:00
major.h
map_to_7segment.h
matroxfb.h
mdio.h
media-bus-format.h	Merge branch 'drm-next-merged' of git://people.freedesktop.org/~airlied/linux into v4l_for_linus	2015-04-21 09:44:55 -03:00
media.h	[media] media.h: mark alsa struct in media_entity_desc as TODO	2015-02-26 08:40:10 -03:00
mei.h
memfd.h	shm: add memfd_create() syscall	2014-08-08 15:57:31 -07:00
mempolicy.h	mm: convert p[te|md]_numa users to p[te|md]_protnone_numa	2015-02-12 18:54:08 -08:00
meye.h
mic_common.h
mic_ioctl.h
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h
mpls.h
mqueue.h
mroute6.h
mroute.h
msdos_fs.h	msdos_fs.h: fix 'fields' in comment	2015-01-20 13:51:06 +01:00
msg.h	ipc/msg: increase MSGMNI, remove scaling	2014-12-13 12:42:52 -08:00
mtio.h
n_r3964.h
nbd.h
ncp_fs.h
ncp_mount.h
ncp_no.h
ncp.h
neighbour.h	net: neighbour: Add mcast_resolicit to configure the number of multicast resolicitations in PROBE state.	2015-03-20 21:47:40 -04:00
net_dropmon.h
net_namespace.h	netns: add rtnl cmd to add and get peer netns ids	2015-01-19 14:21:18 -05:00
net_tstamp.h	net-timestamp: no-payload option	2015-02-02 18:46:51 -08:00
net.h
netconf.h
netdevice.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netfilter.h
netlink_diag.h
netlink.h
netrom.h
nfc.h	NFC: Forward NFC_EVT_TRANSACTION to user space	2015-02-02 21:50:40 +01:00
nfs2.h
nfs3.h
nfs4_mount.h
nfs4.h	uapi: Remove kernel internal declaration	2015-04-21 16:16:04 -04:00
nfs_fs.h
nfs_idmap.h	NFS: Move nfs_idmap.h into fs/nfs/	2015-04-23 15:16:14 -04:00
nfs_mount.h
nfs.h
nfsacl.h
nl80211.h	nl80211: small clarification of the sched_scan delay attribute	2015-03-30 10:25:35 +02:00
nubus.h
nvme.h	NVMe: Update SCSI Inquiry VPD 83h translation	2015-02-19 16:15:35 -07:00
nvram.h
omap3isp.h
omapfb.h
oom.h
openvswitch.h	net: openvswitch: Support masked set actions.	2015-02-07 22:40:17 -08:00
packet_diag.h
param.h
parport.h
patchkey.h
pci_regs.h	PCI: Add defines for PCIe Max_Read_Request_Size	2015-01-27 08:14:26 -06:00
pci.h
perf_event.h	perf: Add ITRACE_START record to indicate that tracing has started	2015-04-02 17:14:17 +02:00
personality.h
pfkeyv2.h
pg.h
phantom.h
phonet.h
pkt_cls.h	cls_bpf: add initial eBPF support for programmable classifiers	2015-03-01 14:05:19 -05:00
pkt_sched.h	pkt_sched: fq: better control of DDOS traffic	2015-02-04 22:15:45 -08:00
pktcdvd.h
pmu.h
poll.h
posix_types.h
ppdev.h
ppp_defs.h
ppp-comp.h
ppp-ioctl.h
pps.h
prctl.h	MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options for MIPS	2015-02-12 12:30:29 +01:00
psci.h
ptp_clock.h
ptrace.h
qnx4_fs.h
qnxtypes.h
quota.h	vfs: Add general support to enforce project quota limits	2015-03-18 21:55:08 +01:00
radeonfb.h
random.h	random: introduce getrandom(2) system call	2014-08-05 16:41:22 -04:00
raw.h
rds.h
reboot.h
reiserfs_fs.h
reiserfs_xattr.h
resource.h
rfkill.h
romfs_fs.h
rose.h
route.h
rtc.h
rtnetlink.h	netns: notify netns id events	2015-04-07 17:29:41 -04:00
scc.h
sched.h	sched: Update comments about CLONE_NEWUTS and CLONE_NEWIPC	2014-11-16 10:58:53 +01:00
screen_info.h
sctp.h
sdla.h
seccomp.h
securebits.h
selinux_netlink.h
sem.h	ipc/sem.c: increase SEMMSL, SEMMNI, SEMOPM	2014-12-13 12:42:52 -08:00
serial_core.h	serial: driver for ETRAX FS UART	2015-02-07 18:43:16 +08:00
serial_reg.h	x86, intel-mid: remove Intel MID specific serial support	2015-03-07 03:25:18 +01:00
serial.h	serial: uapi: Declare all userspace-visible io types	2015-03-07 03:39:55 +01:00
serio.h
shm.h
signal.h
signalfd.h
smiapp.h	[media] smiapp: Add driver-specific test pattern menu item definitions	2014-08-21 15:25:11 -05:00
snmp.h	tcp: helpers to mitigate ACK loops by rate-limiting out-of-window dupacks	2015-02-08 01:03:12 -08:00
sock_diag.h
socket.h
sockios.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h
stddef.h
string.h
suspend_ioctls.h
swab.h
synclink.h
sysctl.h	kernel: add panic_on_warn	2014-12-10 17:41:10 -08:00
sysinfo.h
target_core_user.h	target: Version 2 of TCMU ABI	2015-04-19 22:40:26 -07:00
taskstats.h
tcp_metrics.h
tcp.h
telephony.h
termios.h
thermal.h	thermal: provide an UAPI header file	2014-12-09 14:10:41 +08:00
time.h
times.h
timex.h
tiocl.h
tipc_config.h	tipc: convert legacy nl link stat to nl compat	2015-02-09 13:20:47 -08:00
tipc_netlink.h	tipc: add ip/udp media type	2015-03-05 22:08:42 -05:00
tipc.h
toshiba.h
tty_flags.h	tty: warn on deprecated serial flags	2014-11-06 15:01:03 -08:00
tty.h
types.h
udf_fs_i.h
udp.h
uhid.h	HID: uhid: report to user-space whether reports are numbered	2014-08-25 03:28:08 -05:00
uinput.h	Input: uinput - fix ioctl nr overflow for UI_GET_SYSNAME/VERSION	2015-01-11 16:27:25 -08:00
uio.h
ultrasound.h
un.h
unistd.h
unix_diag.h
usbdevice_fs.h	USB: usbfs: allow URBs to be reaped after disconnection	2015-01-31 09:05:06 -08:00
usbip.h	usbip: move usbip kernel code out of staging	2014-08-25 10:40:06 -07:00
utime.h
utsname.h
uuid.h
uvcvideo.h
v4l2-common.h	[media] v4l: Add V4L2_SEL_TGT_NATIVE_SIZE selection target	2014-12-04 12:37:01 -02:00
v4l2-controls.h	[media] adv7180: Add fast switch support	2015-02-02 11:51:38 -02:00
v4l2-dv-timings.h	[media] videodev2.h/v4l2-dv-timings.h: add V4L2_DV_FL_IS_CE_VIDEO flag	2015-04-08 06:36:52 -03:00
v4l2-mediabus.h	[media] v4l2-mediabus.h: use two __u16 instead of two __u32	2014-12-16 23:21:36 -02:00
v4l2-subdev.h	[media] v4l2-subdev.h: add 'which' field for the enum structs	2015-03-23 11:44:35 -07:00
veth.h
vfio.h	vfio: powerpc/spapr: Register memory and define IOMMU v2	2015-06-11 15:16:55 +10:00
vhost.h
videodev2.h	[media] videodev2.h/v4l2-dv-timings.h: add V4L2_DV_FL_IS_CE_VIDEO flag	2015-04-08 06:36:52 -03:00
virtio_9p.h
virtio_balloon.h	virtio_balloon: transitional interface	2015-04-15 12:41:09 +09:30
virtio_blk.h	virtio_blk: fix comment for virtio 1.0	2015-03-10 11:48:29 +10:30
virtio_config.h	virtio: Don't expose legacy config features when VIRTIO_CONFIG_NO_LEGACY defined.	2015-02-11 15:03:16 +10:30
virtio_console.h	virtio_console: virtio 1.0 support	2014-12-09 12:06:32 +02:00
virtio_ids.h	Add virtio-input driver.	2015-03-29 12:13:52 +10:30
virtio_input.h	Add virtio-input driver.	2015-03-29 12:13:52 +10:30
virtio_net.h	virtio_net: unconditionally define struct virtio_net_hdr_v1.	2015-02-17 16:19:27 +10:30
virtio_pci.h	virtio: define VIRTIO_PCI_CAP_PCI_CFG in header.	2015-02-11 15:03:15 +10:30
virtio_ring.h	virtio: fix typo in vring_need_event() doc comment	2015-05-01 20:46:32 -07:00
virtio_rng.h
virtio_scsi.h	uapi/virtio_scsi: allow overriding CDB/SENSE size	2015-03-13 15:55:43 +10:30
virtio_types.h	virtio: memory access APIs	2014-12-09 12:05:24 +02:00
vm_sockets.h
vsp1.h
vt.h	vt: Remove vt_get_kmsg_redirect() from uapi header	2014-11-05 20:18:30 -08:00
wait.h
wanrouter.h
watchdog.h
wil6210_uapi.h	wil6210: atomic I/O for the card memory	2014-10-02 14:23:14 -04:00
wimax.h
wireless.h
x25.h
xattr.h	xattr: fix check for simultaneous glibc header inclusion	2014-08-29 16:28:16 -07:00
xfrm.h	xfrm: simplify xfrm_address_t use	2015-03-31 13:58:35 -04:00
xilinx-v4l2-controls.h	[media] v4l: xilinx: Add Test Pattern Generator driver	2015-04-03 01:04:18 -03:00
zorro_ids.h
zorro.h