Alex Williamson 1ef3e2bc04 vfio/iommu_type1: Multi-IOMMU domain support ... We currently have a problem that we cannot support advanced features of an IOMMU domain (ex. IOMMU_CACHE), because we have no guarantee that those features will be supported by all of the hardware units involved with the domain over its lifetime. For instance, the Intel VT-d architecture does not require that all DRHDs support snoop control. If we create a domain based on a device behind a DRHD that does support snoop control and enable SNP support via the IOMMU_CACHE mapping option, we cannot then add a device behind a DRHD which does not support snoop control or we'll get reserved bit faults from the SNP bit in the pagetables. To add to the complexity, we can't know the properties of a domain until a device is attached. We could pass this problem off to userspace and require that a separate vfio container be used, but we don't know how to handle page accounting in that case. How do we know that a page pinned in one container is the same page as a different container and avoid double billing the user for the page. The solution is therefore to support multiple IOMMU domains per container. In the majority of cases, only one domain will be required since hardware is typically consistent within a system. However, this provides us the ability to validate compatibility of domains and support mixed environments where page table flags can be different between domains. To do this, our DMA tracking needs to change. We currently try to coalesce user mappings into as few tracking entries as possible. The problem then becomes that we lose granularity of user mappings. We've never guaranteed that a user is able to unmap at a finer granularity than the original mapping, but we must honor the granularity of the original mapping. This coalescing code is therefore removed, allowing only unmaps covering complete maps. The change in accounting is fairly small here, a typical QEMU VM will start out with roughly a dozen entries, so it's arguable if this coalescing was ever needed. We also move IOMMU domain creation to the point where a group is attached to the container. An interesting side-effect of this is that we now have access to the device at the time of domain creation and can probe the devices within the group to determine the bus_type. This finally makes vfio_iommu_type1 completely device/bus agnostic. In fact, each IOMMU domain can host devices on different buses managed by different physical IOMMUs, and present a single DMA mapping interface to the user. When a new domain is created, mappings are replayed to bring the IOMMU pagetables up to the state of the current container. And of course, DMA mapping and unmapping automatically traverse all of the configured IOMMU domains. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Cc: Varun Sethi <Varun.Sethi@freescale.com>		2014-02-26 11:38:36 -07:00
..
byteorder
caif	caif: Remove my bouncing email address.	2013-04-23 13:25:51 -04:00
can	can: add explicit copyrights to can's netlink header	2013-09-21 15:43:12 +02:00
cifs	cifs: Move and expand MAX_SERVER_SIZE definition	2013-09-08 14:34:22 -05:00
dvb	[media] demux.h: Remove duplicated enum	2013-04-08 06:53:15 -03:00
genwqe	GenWQE PCI support, health monitoring and recovery	2013-12-18 16:51:15 -08:00
hdlc
hsi
isdn
mmc
netfilter	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2014-01-10 14:50:02 -05:00
netfilter_arp
netfilter_bridge	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
netfilter_ipv4	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
netfilter_ipv6	netfilter: fix struct ip6t_frag field description	2013-04-02 12:25:57 +02:00
nfsd
raid	md: Change handling of save_raid_disk and metadata update during recovery.	2014-01-14 16:44:21 +11:00
spi
sunrpc
tc_act	net_sched: act: pick a different type for act_xt	2014-01-16 17:24:11 -08:00
tc_ematch
usb	USB: move the definition of USB_MAXCHILDREN	2013-07-16 15:33:02 -07:00
wimax	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
a.out.h
acct.h	UAPI: fix endianness conditionals in linux/acct.h	2013-03-13 15:21:48 -07:00
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h	UAPI: fix endianness conditionals in linux/aio_abi.h	2013-03-13 15:21:48 -07:00
apm_bios.h	apm-emulation: add hibernation APM events to support suspend2disk	2014-01-07 13:50:28 +01:00
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	Merge git://git.infradead.org/users/eparis/audit	2014-01-23 18:08:10 -08:00
auto_fs4.h
auto_fs.h	unbreak automounter support on 64-bit kernel with 32-bit userspace (v2)	2013-02-08 20:42:18 +01:00
auxvec.h	powerpc: Add HWCAP2 aux entry	2013-04-26 16:08:16 +10:00
ax25.h
b1lli.h
baycom.h
bcache.h	bcache: Add bch_btree_keys_u64s_remaining()	2014-01-08 13:05:13 -08:00
bcm933xx_hcs.h	MIPS: BCM63XX: recognize Cable Modem firmware format	2013-07-01 15:10:53 +02:00
bfs_fs.h
binfmts.h
blkpg.h
blktrace_api.h
bpqether.h
bsg.h
btrfs.h	Revert "btrfs: add ioctl to export size of global metadata reservation"	2014-02-14 13:42:13 -08:00
can.h
capability.h
capi.h
cciss_defs.h
cciss_ioctl.h
cdrom.h	libata: identify and init ZPODD devices	2013-01-21 15:40:35 -05:00
cgroupstats.h
chio.h
cm4000_cs.h	Omnikey Cardman 4000: pull in ioctl.h in user header	2013-08-28 19:26:38 -07:00
cn_proc.h	connector: Added coredumping event to the process connector	2013-03-20 13:23:21 -04:00
coda_psdev.h
coda.h
coff.h
connector.h	Drivers: hv: Add a new driver to support host initiated backup	2013-03-15 12:12:36 -07:00
const.h	linux/const.h: Add _BITUL() and _BITULL()	2013-06-25 15:50:04 -07:00
cramfs_fs.h
cuda.h
cyclades.h
cycx_cfm.h
dcbnl.h
dccp.h
dlm_device.h
dlm_netlink.h
dlm_plock.h
dlm.h
dlmconstants.h
dm-ioctl.h	dm: allow remove to be deferred	2013-11-09 18:20:22 -05:00
dm-log-userspace.h	dm log userspace: allow mark requests to piggyback on flush requests	2014-01-21 23:46:27 -05:00
dn.h	include/uapi/linux/dn.h: pull in ioctl.h header	2014-01-23 16:36:55 -08:00
dqblk_xfs.h	quota: Add a new quotactl command Q_XGETQSTATV	2013-08-20 16:53:58 -05:00
edd.h
efs_fs_sb.h
elf-em.h	Drop remaining references to H8/300 architecture	2013-09-16 18:20:24 -07:00
elf-fdpic.h
elf.h	metag: ptrace: Implement NT_METAG_TLS	2013-03-27 14:37:47 +00:00
elfcore.h
errno.h
errqueue.h
ethtool.h	net: ethtool: disambiguate XCVR_* meaning	2013-05-27 22:42:50 -07:00
eventpoll.h	epoll: drop EPOLLWAKEUP if PM_SLEEP is disabled	2013-12-03 15:35:52 +01:00
fadvise.h
falloc.h
fanotify.h
fb.h
fcntl.h
fd.h	floppy: bail out in open() if drive is not responding to block0 read	2014-01-17 11:12:06 +01:00
fdreg.h
fib_rules.h	fib_rules: fix suppressor names and default values	2013-08-03 10:40:23 -07:00
fiemap.h	ext4: add support for extent pre-caching	2013-08-16 22:05:14 -04:00
filter.h	filter: add ANC_PAY_OFFSET instruction for loading payload start offset	2013-03-20 13:15:45 -04:00
firewire-cdev.h	firewire: fix libdc1394/FlyCap2 iso event regression	2013-07-27 20:24:36 +02:00
firewire-constants.h
flat.h
fs.h	fs: bump inode and dentry counters to long	2013-09-10 18:56:29 -04:00
fsl_hypervisor.h
fuse.h	fuse: add flag to turn on async direct IO	2013-05-01 14:37:21 +02:00
futex.h
gameport.h
gen_stats.h	net_sched: add 64bit rate estimators	2013-06-11 02:51:03 -07:00
genetlink.h	genetlink/pmcraid: use proper genetlink multicast API	2013-11-28 18:26:30 -05:00
gfs2_ondisk.h	GFS2: Add hints to directory leaf blocks	2014-01-08 12:14:57 +00:00
gigaset_dev.h
hash_info.h	crypto: provide single place for hash algo information	2013-10-25 17:14:03 -04:00
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h
hpet.h
hsr_netlink.h	net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)	2013-11-03 23:20:14 -05:00
hw_breakpoint.h	perf: Make perf build for x86 with UAPI disintegration applied	2012-11-19 22:21:03 +00:00
hysdn_if.h
i2c-dev.h
i2c.h
i2o-dev.h
i8k.h
icmp.h
icmpv6.h	ICMPv6: treat dest unreachable codes 5 and 6 as EACCES, not EPROTO	2013-09-03 22:11:44 -04:00
if_addr.h	ipv6 addrconf: add IFA_F_NOPREFIXROUTE flag to suppress creation of IP6 routes	2014-01-15 17:00:40 -08:00
if_addrlabel.h
if_alg.h
if_arcnet.h
if_arp.h	net: if_arp: add ARPHRD_6LOWPAN type	2013-12-11 12:57:55 -08:00
if_bonding.h	bonding: modify the old and add new xmit hash policies	2013-10-03 15:36:38 -04:00
if_bridge.h	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
if_cablemodem.h	if_cablemodem.h: Add parenthesis around ioctl macros	2013-05-08 13:13:30 -07:00
if_eql.h
if_ether.h	net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)	2013-11-03 23:20:14 -05:00
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h	rtnetlink: remove IFLA_BOND_SLAVE definition	2014-01-24 00:36:48 -08:00
if_ltalk.h
if_packet.h	af_packet: Add Queue mapping mode to af_packet fanout operation	2014-01-22 17:35:50 -08:00
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h	pptp: fix byte order warnings	2013-08-13 15:10:22 -07:00
if_slip.h
if_team.h
if_tun.h	tun: Get skfilter layout	2013-08-21 12:21:45 -07:00
if_tunnel.h	sit: allow to configure 6rd tunnels via netlink	2012-11-20 13:43:28 -05:00
if_vlan.h	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
if_x25.h
if.h	net: Add layer 2 hardware acceleration operations for macvlan devices	2013-11-07 19:11:41 -05:00
igmp.h
in6.h	inet: defines IPPROTO_* needed for module alias generation	2014-02-06 21:18:06 -08:00
in_route.h
in.h	ipv4: introduce new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACE	2013-11-05 21:52:27 -05:00
inet_diag.h
inotify.h
input.h	Input: define KEY_WWAN for Wireless WAN	2013-12-16 02:20:40 -08:00
ioctl.h
ip6_tunnel.h
ip_vs.h	ipvs: fix the IPVS_CMD_ATTR_MAX definition	2013-10-15 10:36:01 +09:00
ip.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-08-26 16:37:08 -04:00
ipc.h
ipmi_msgdefs.h
ipmi.h	ipmi: remove superfluous kernel/userspace explanation	2013-02-27 19:10:21 -08:00
ipsec.h
ipv6_route.h
ipv6.h	ipv6: drop fragmented ndisc packets by default (RFC 6980)	2013-08-29 15:32:08 -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	zorro/UAPI: Disintegrate include/linux/zorro*.h	2013-11-26 11:09:08 +01:00
kd.h
kdev_t.h
kernel-page-flags.h
kernel.h
kernelcapi.h
kexec.h	m68k: Add kexec support	2013-12-08 11:01:47 +01:00
keyboard.h
keyctl.h	KEYS: Add per-user_namespace registers for persistent per-UID kerberos caches	2013-09-24 10:35:19 +01:00
kvm_para.h	kvm uapi: Add KICK_CPU and PV_UNHALT definition to uapi	2013-08-26 12:46:01 +03:00
kvm.h	add support for Hyper-V reference time counter	2014-01-17 10:22:08 +01:00
l2tp.h
libc-compat.h	net: sync some IP headers with glibc	2013-09-04 13:12:43 -04:00
limits.h
llc.h
loop.h
lp.h
magic.h	Btrfs: add tests for find_lock_delalloc_range	2013-11-11 21:56:51 -05:00
major.h	mtd: Move major number definitions to major.h	2013-11-06 23:32:59 -08:00
map_to_7segment.h
matroxfb.h
mdio.h
media.h	[media] media: Add pad flag MEDIA_PAD_FL_MUST_CONNECT	2013-12-04 14:59:20 -02:00
mei.h
mempolicy.h	mm: numa: Migrate on reference policy	2012-12-11 14:42:48 +00:00
meye.h	[media] meye: convert to the control framework	2013-02-05 18:23:47 -02:00
mic_common.h	misc: mic: Fix endianness issues.	2013-11-27 11:03:38 -08:00
mic_ioctl.h	misc: mic: fix possible signed underflow (undefined behavior) in userspace API	2014-02-07 15:30:34 -08:00
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h	module: add flags arg to sys_finit_module()	2012-12-14 13:05:23 +10:30
mqueue.h	uapi: Use __kernel_long_t in struct mq_attr	2014-01-20 14:45:33 -08:00
mroute6.h	mcast: add multicast proxy support (IPv4 and IPv6)	2013-01-21 13:55:14 -05:00
mroute.h	mcast: add multicast proxy support (IPv4 and IPv6)	2013-01-21 13:55:14 -05:00
msdos_fs.h	fatfs: add FAT_IOCTL_GET_VOLUME_ID	2013-07-09 10:33:25 -07:00
msg.h	uapi: Use __kernel_long_t in struct msgbuf	2014-01-20 14:44:50 -08:00
mtio.h
n_r3964.h
nbd.h	nbd: support FLUSH requests	2013-02-27 19:10:22 -08:00
ncp_fs.h
ncp_mount.h
ncp_no.h
ncp.h
neighbour.h	neighbour.h: fix comment	2014-01-22 10:34:15 +01:00
net_dropmon.h
net_tstamp.h	net_tstamp: Add SIOCGHWTSTAMP ioctl to match SIOCSHWTSTAMP	2013-11-19 19:07:21 +00:00
net.h
netconf.h	netconf: rename PROXY_ARP to NEIGH_PROXY	2013-12-22 18:02:43 -05:00
netdevice.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netfilter.h	netfilter: nf_tables: add "inet" table for IPv4/IPv6	2014-01-07 23:57:25 +01:00
netlink_diag.h	diag: warn about missing first netlink attribute	2013-11-28 18:16:43 -05:00
netlink.h	netlink: mmaped netlink: ring setup	2013-04-19 14:57:57 -04:00
netrom.h
nfc.h	NFC: Define secure element IO API and commands	2013-09-25 02:30:47 +02:00
nfs2.h
nfs3.h
nfs4_mount.h
nfs4.h	uapi: convert u64 to __u64 in exported headers	2014-01-23 16:36:55 -08:00
nfs_fs.h
nfs_idmap.h
nfs_mount.h	NFS: stop using NFS_MOUNT_SECFLAVOUR server flag	2013-10-28 15:37:56 -04:00
nfs.h
nfsacl.h
nl80211.h	cfg80211: Add support for QoS mapping	2013-12-19 16:29:22 +01:00
nubus.h
nvme.h	NVMe: Abort timed out commands	2014-01-27 19:27:53 -05:00
nvram.h
omap3isp.h
omapfb.h
oom.h
openvswitch.h	openvswitch: Drop user features if old user space attempted to create datapath	2014-01-06 15:53:00 -08:00
packet_diag.h	diag: warn about missing first netlink attribute	2013-11-28 18:16:43 -05:00
param.h
parport.h
patchkey.h
pci_regs.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-01-25 11:17:34 -08:00
pci.h
perf_event.h	uapi: convert u64 to __u64 in exported headers	2014-01-23 16:36:55 -08:00
personality.h
pfkeyv2.h
pg.h
phantom.h
phonet.h
pkt_cls.h	net: sched: cls_bpf: add BPF-based classifier	2013-10-29 17:33:17 -04:00
pkt_sched.h	net: pkt_sched: PIE AQM scheme	2014-01-06 15:13:01 -05:00
pktcdvd.h
pmu.h
poll.h
posix_types.h
ppdev.h
ppp_defs.h
ppp-comp.h
ppp-ioctl.h	include/uapi/linux/ppp-ioctl.h: pull in ppp_defs.h	2014-01-23 16:36:55 -08:00
pps.h
prctl.h
ptp_clock.h
ptrace.h	ptrace: add ability to get/set signal-blocked mask	2013-07-03 16:08:01 -07:00
qnx4_fs.h
qnxtypes.h
quota.h
radeonfb.h
random.h	random32: move rnd_state to linux/random.h	2013-11-11 14:32:14 -05:00
raw.h
rds.h
reboot.h
reiserfs_fs.h
reiserfs_xattr.h	xattr: Constify ->name member of "struct xattr".	2013-07-25 19:30:03 +10:00
resource.h	uapi: Use __kernel_long_t/__kernel_ulong_t in <linux/resource.h>	2014-01-20 14:44:17 -08:00
rfkill.h	rfkill: Add NFC to the list of supported radios	2013-04-12 16:54:38 +02:00
romfs_fs.h
rose.h
route.h
rtc.h
rtnetlink.h	tcp: introduce a per-route knob for quick ack	2013-06-19 23:06:51 -07:00
scc.h
sched.h	sched: Move SCHED_RESET_ON_FORK into attr::sched_flags	2014-01-16 09:27:17 +01:00
screen_info.h
sctp.h	sctp: Fix FSF address in file headers	2013-12-06 12:37:56 -05:00
sdla.h
seccomp.h
securebits.h
selinux_netlink.h
sem.h
serial_core.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2013-09-06 11:14:33 -07:00
serial_reg.h	Revert "OMAP: UART: Keep the TX fifo full when possible"	2013-08-27 16:02:18 -07:00
serial.h
serio.h
shm.h	uapi: Use __kernel_ulong_t in shmid64_ds/shminfo64/shm_info	2014-01-20 14:45:25 -08:00
signal.h	unify SS_ONSTACK/SS_DISABLE definitions	2012-12-19 18:07:39 -05:00
signalfd.h
snmp.h	tcp: auto corking	2013-12-06 12:51:41 -05:00
sock_diag.h
socket.h
sockios.h	net_tstamp: Add SIOCGHWTSTAMP ioctl to match SIOCSHWTSTAMP	2013-11-19 19:07:21 +00:00
som.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h
stddef.h
string.h
suspend_ioctls.h
swab.h	byteorder: allow arch to opt to use GCC intrinsics for byteswapping	2012-12-06 01:22:31 +00:00
synclink.h
sysctl.h
sysinfo.h
taskstats.h
tcp_metrics.h	tcp: metrics: New netlink attribute for src IP and dumped in netlink reply	2014-01-10 17:38:18 -05:00
tcp.h	tcp: TCP_NOTSENT_LOWAT socket option	2013-07-24 17:54:48 -07:00
telephony.h
termios.h
time.h	timekeeping: Add CLOCK_TAI clockid	2013-03-22 16:19:59 -07:00
times.h
timex.h	uapi: Use __kernel_long_t in struct timex	2014-01-20 14:44:05 -08:00
tiocl.h
tipc_config.h	tipc: update code comments to reflect new uapi header path	2013-06-17 15:53:00 -07:00
tipc.h	tipc: update code comments to reflect new uapi header path	2013-06-17 15:53:00 -07:00
toshiba.h
tty_flags.h
tty.h
types.h
udf_fs_i.h
udp.h
uhid.h	HID: uhid: use generic hidinput_input_event()	2013-07-31 10:33:05 +02:00
uinput.h
uio.h
ultrasound.h
un.h
unistd.h
unix_diag.h	diag: warn about missing first netlink attribute	2013-11-28 18:16:43 -05:00
usbdevice_fs.h
utime.h
utsname.h
uuid.h
uvcvideo.h
v4l2-common.h
v4l2-controls.h	[media] s5p-mfc: Add controls to set vp8 enc profile	2014-01-13 10:59:11 -02:00
v4l2-dv-timings.h	[media] v4l2-dv-timings.h: remove duplicate V4L2_DV_BT_DMT_1366X768P60	2013-08-18 08:13:51 -03:00
v4l2-mediabus.h	[media] v4l: Add media format codes for AHSV8888 on 32-bit busses	2013-12-11 09:21:37 -02:00
v4l2-subdev.h
veth.h
vfio.h	vfio/iommu_type1: Multi-IOMMU domain support	2014-02-26 11:38:36 -07:00
vhost.h	tcm_vhost: header split up	2013-05-02 13:40:15 +03:00
videodev2.h	[media] videodev2: Set vb2_rect's width and height as unsigned	2014-01-07 08:02:39 -02:00
virtio_9p.h
virtio_balloon.h	virtio: do not export "u16" and "u64" to userspace	2013-04-02 16:42:58 +10:30
virtio_blk.h
virtio_config.h	virtio: VIRTIO_F_ANY_LAYOUT feature	2013-07-09 10:47:45 +09:30
virtio_console.h	Simple warning fix for module sections. If too late to pull, no big deal.	2013-07-03 13:09:06 -07:00
virtio_ids.h	caif_virtio: Introduce caif over virtio	2013-03-20 14:06:06 +10:30
virtio_net.h	uapi: Convert some uses of 6 to ETH_ALEN	2013-08-02 12:33:54 -07:00
virtio_pci.h	virtio_pci: better macro exported in uapi	2013-05-20 12:08:09 +09:30
virtio_ring.h
virtio_rng.h
vm_sockets.h	VSOCK: Split vm_sockets.h into kernel/uapi	2013-03-08 12:24:48 -05:00
vsp1.h	[media] v4l: vsp1: Add LUT support	2013-12-11 09:25:20 -02:00
vt.h
wait.h
wanrouter.h	wanrouter: delete now orphaned header content, files/drivers	2013-01-31 19:56:35 -05:00
watchdog.h
wimax.h
wireless.h
x25.h
xattr.h	Btrfs: add support for inode properties	2014-01-28 13:20:24 -08:00
xfrm.h	xfrm: allow to avoid copying DSCP during encapsulation	2013-03-06 07:02:45 +01:00
zorro_ids.h	zorro/UAPI: Disintegrate include/linux/zorro*.h	2013-11-26 11:09:08 +01:00
zorro.h	zorro/UAPI: Use proper types (endianness/size) in <linux/zorro.h>	2013-11-26 11:09:09 +01:00