Michael S. Tsirkin
1a93769399
virtio: new feature to detect IOMMU device quirk ...
The interaction between virtio and IOMMUs is messy.
On most systems with virtio, physical addresses match bus addresses,
and it doesn't particularly matter which one we use to program
the device.
On some systems, including Xen and any system with a physical device
that speaks virtio behind a physical IOMMU, we must program the IOMMU
for virtio DMA to work at all.
On other systems, including SPARC and PPC64, virtio-pci devices are
enumerated as though they are behind an IOMMU, but the virtio host
ignores the IOMMU, so we must either pretend that the IOMMU isn't
there or somehow map everything as the identity.
Add a feature bit to detect that quirk: VIRTIO_F_IOMMU_PLATFORM.
Any device with this feature bit set to 0 needs a quirk and has to be
passed physical addresses (as opposed to bus addresses) even though
the device is behind an IOMMU.
Note: it has to be a per-device quirk because for example, there could
be a mix of passed-through and virtual virtio devices. As another
example, some devices could be implemented by an out of process
hypervisor backend (in case of qemu vhost, or vhost-user) and so support
for an IOMMU needs to be coded up separately.
It would be cleanest to handle this in IOMMU core code, but that needs
per-device DMA ops. While we are waiting for that to be implemented, use
a work-around in virtio core.
Note: a "noiommu" feature is a quirk - add a wrapper to make
that clear.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-08-01 21:44:52 +03:00
x86/quirks: Add early quirk to reset Apple AirPort card
2016-07-10 20:13:53 +02:00
libceph: change ceph_osdmap_flag() to take osdc
2016-05-30 23:00:22 +02:00
Merge branch 'topic/xilinx' into for-linus
2016-05-17 10:15:34 +05:30
iio: st_sensors: switch to a threaded interrupt
2016-05-29 20:21:41 +01:00
irqchip/gic-v3: Fix copy+paste mistakes in defines
2016-06-02 17:59:44 +01:00
mfd: da9053: Fix compiler warning message for uninitialised variable
2016-06-30 07:44:23 +01:00
net/mlx4_en: Avoid unregister_netdev at shutdown flow
2016-06-22 16:38:11 -04:00
net/mlx5: Add timeout handle to commands with callback
2016-07-01 06:12:03 -04:00
MMC core:
2016-05-26 09:36:10 -07:00
misc: at24: Fix typo in at24 header file
2016-05-26 20:52:15 +02:00
qed*: Don't reset statistics on inner reload
2016-06-19 10:47:32 -07:00
regulator: Silence build warnings from regulator_can_change_voltage()
2016-05-17 18:06:18 +01:00
ARM: SoC driver updates for v4.7
2016-05-18 13:14:02 -07:00
rpc: share one xps between all backchannels
2016-06-15 10:32:25 -04:00
USB: EHCI: declare hostpc register as zero-length array
2016-06-24 17:03:12 -07:00
Merge branches 'acpi-pci', 'acpi-misc' and 'acpi-tools'
2016-05-16 16:45:48 +02:00
Merge branch 'for-4.7-zac' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2016-05-23 17:53:39 -07:00
Merge branch 'stable-4.7' of git://git.infradead.org/users/pcmoore/audit
2016-06-29 15:18:47 -07:00
MIPS: BCM47xx: Move SPROM driver to drivers/firmware/
2016-05-13 14:01:43 +02:00
coredump: fix dumping through pipes
2016-06-07 22:07:09 -04:00
DAX error handling for 4.7
2016-05-26 19:34:26 -07:00
include/linux: apply __malloc attribute
2016-05-19 19:12:14 -07:00
bpf, perf: delay release of BPF prog after grace period
2016-06-29 05:42:55 -04:00
clk: Remove CLK_IS_ROOT flag
2016-06-01 14:56:57 -07:00
mm, oom, compaction: prevent from should_compact_retry looping for ever for costly orders
2016-05-20 17:58:30 -07:00
compiler.h: add support for malloc attribute
2016-05-19 19:12:14 -07:00
compiler.h: add support for malloc attribute
2016-05-19 19:12:14 -07:00
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2016-05-23 11:48:48 -07:00
cpuidle: Do not access cpuidle_devices when !CONFIG_CPU_IDLE
2016-06-02 23:05:27 +02:00
cpuset: use static key better and convert to new API
2016-05-19 19:12:14 -07:00
crash_dump: Add vmcore_elf32_check_arch
2016-05-13 14:01:59 +02:00
Filesystem DAX locking for 4.7
2016-05-26 20:00:28 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-06-20 10:41:51 -07:00
debugobjects: insulate non-fixup logic related to static obj from fixup callbacks
2016-05-19 19:12:14 -07:00
driver core update for 4.7-rc1
2016-05-20 21:26:15 -07:00
devpts: Make each mount of devpts an independent filesystem.
2016-06-05 10:36:01 -07:00
dma-buf: headerdoc fixes
2016-05-31 22:12:43 +05:30
efi: Fix for_each_efi_memory_desc_in_map() for empty memmaps
2016-06-03 09:57:35 +02:00
make IS_ERR_VALUE() complain about non-pointer-sized arguments
2016-05-27 16:03:22 -07:00
pnfs: rework LAYOUTGET retry handling
2016-05-17 15:48:12 -04:00
fence: add missing descriptions for fence
2016-05-31 22:17:05 +05:30
rose: limit sk_filter trim to payload
2016-07-13 11:53:40 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-05-27 17:14:05 -07:00
FS-Cache: make check_consistency callback return int
2016-06-01 10:29:39 +02:00
fsnotify: avoid spurious EMFILE errors from inotify_init()
2016-05-19 19:12:14 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching
2016-05-17 17:11:27 -07:00
include/linux/genhd.h: move to use generic UUID library
2016-05-20 17:58:30 -07:00
printk/nmi: generic solution for safe printk in NMI
2016-05-20 17:58:30 -07:00
<linux/hash.h>: Add support for architecture-specific functions
2016-05-28 15:48:31 -04:00
mm: thp: move pmd check inside ptl for freeze_page()
2016-07-15 14:54:27 +09:00
include/linux/hugetlb.h: use bool instead of int for hugepage_migration_supported()
2016-05-20 17:58:30 -07:00
include/linux/hugetlb*.h: clean up code
2016-05-20 17:58:30 -07:00
mm/hugetlb: is_vm_hugetlb_page() can return bool
2016-05-19 19:12:14 -07:00
net: diag: add missing declarations
2016-06-10 23:22:55 -07:00
fix up initial thread stack pointer vs thread_info confusion
2016-06-24 17:07:33 -07:00
PCI: Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs
2016-05-16 15:12:02 -05:00
net: l3mdev: Add hook in ip and ipv6
2016-05-11 19:31:40 -04:00
irqbypass: Disallow NULL token
2016-05-11 22:37:54 +02:00
isa: Dummy isa_register_driver should return error code
2016-06-17 20:47:11 -07:00
ibft: Expose iBFT acpi header via sysfs
2016-05-16 11:14:29 -04:00
locking/static_key: Fix concurrent static_key_slow_inc()
2016-06-24 08:23:16 +02:00
mm/kasan: add API to check memory regions
2016-05-20 17:58:30 -07:00
mm: mempool: kasan: don't poot mempool objects in quarantine
2016-06-24 17:23:52 -07:00
Staging and IIO driver update for 4.7-rc1
2016-05-20 22:20:48 -07:00
driver core update for 4.7-rc1
2016-05-20 21:26:15 -07:00
s390/kexec: consolidate crash_map/unmap_reserved_pages() and arch_kexec_protect(unprotect)_crashkres()
2016-05-23 17:04:14 -07:00
KVM: Create debugfs dir and stat files for each VM
2016-05-25 16:12:05 +02:00
leds: core: Fix brightness setting upon hardware blinking enabled
2016-06-08 11:47:06 +02:00
Merge branches 'for-4.7/core', 'for-4.7/livepatching-doc' and 'for-4.7/livepatching-ppc64' into for-linus
2016-05-17 12:06:35 +02:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-05-16 14:47:16 -07:00
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2016-05-19 09:21:36 -07:00
mm: memcontrol: fix cgroup creation failure after many small jobs
2016-07-23 10:25:54 +09:00
mm: fix section mismatch warning
2016-05-27 15:23:32 -07:00
tmpfs: preliminary minor tidyups
2016-05-19 19:12:14 -07:00
include/linux: apply __malloc attribute
2016-05-19 19:12:14 -07:00
Revert "mm: make faultaround produce old ptes"
2016-06-24 17:23:52 -07:00
mm: update_lru_size do the __mod_zone_page_state
2016-05-19 19:12:14 -07:00
mm: oom_reaper: remove some bloat
2016-05-26 15:35:44 -07:00
mm fix commmets: if SPARSEMEM, pgdata doesn't have page_ext
2016-05-20 17:58:30 -07:00
devpts: Make each mount of devpts an independent filesystem.
2016-06-05 10:36:01 -07:00
net: Don't forget pr_fmt on net_dbg_ratelimited for CONFIG_DYNAMIC_DEBUG
2016-06-15 22:07:57 -07:00
net: define gso types for IPx over IPv4 and IPv6
2016-05-20 18:03:15 -04:00
vlan: use a valid default mtu value for vlan over macsec
2016-07-16 20:15:02 -07:00
pnfs: rework LAYOUTGET retry handling
2016-05-17 15:48:12 -04:00
Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-05-17 15:05:23 -07:00
NFS: Add COPY nfs operation
2016-05-17 15:47:55 -04:00
NFS client updates for Linux 4.7
2016-05-26 10:33:33 -07:00
nilfs2: fix block comments
2016-05-23 17:04:14 -07:00
include/linux/nodemask.h: create next_node_in() helper
2016-05-19 19:12:14 -07:00
of: add missing const for of_parse_phandle_with_args() in !CONFIG_OF
2016-06-03 07:27:55 -05:00
PCI, of: Move PCI I/O space management to PCI core code
2016-05-12 07:07:42 -05:00
drivers/of: Return allocated memory from of_fdt_unflatten_tree()
2016-05-16 07:22:35 -05:00
drivers: of: Fix of_pci.h header guard
2016-06-08 08:18:06 -05:00
drivers: of: add definition of early_init_dt_alloc_reserved_memory_arch
2016-06-09 14:38:22 -05:00
signal: make oom_flags a bool
2016-05-23 17:04:14 -07:00
kernel/padata.c: removed unused code
2016-05-19 19:12:14 -07:00
mm: use unsigned long constant for page flags
2016-05-20 17:58:30 -07:00
mm: check the return value of lookup_page_ext for all call sites
2016-06-03 15:06:22 -07:00
mm: rename _count, field of the struct page, to _refcount
2016-05-19 19:12:14 -07:00
mm: tighten fault_in_pages_writeable()
2016-05-20 17:58:30 -07:00
PCI changes for the v4.7 merge window:
2016-05-19 13:10:54 -07:00
printk/nmi: generic solution for safe printk in NMI
2016-05-20 17:58:30 -07:00
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-05-25 17:05:40 -07:00
fs: poll/select/recvmmsg: use timespec64 for timeout events
2016-05-19 19:12:14 -07:00
posix_acl: de-union a_refcount and a_rcu
2016-07-11 13:48:02 -04:00
printk/nmi: flush NMI messages on the system panic
2016-05-20 17:58:30 -07:00
pwm: Fix pwm_apply_args()
2016-06-23 18:37:05 +02:00
radix-tree: fix radix_tree_iter_retry() for tagged iterators.
2016-07-23 10:25:54 +09:00
lib/uuid.c: move generate_random_uuid() to uuid.c
2016-05-20 17:58:30 -07:00
remoteproc: Add additional crash reasons
2016-05-12 15:50:19 -07:00
reservation: add headerdoc comments
2016-05-31 22:12:43 +05:30
reset: TRIVIAL: Add line break at same place for similar APIs
2016-06-29 21:24:53 +02:00
mm: thp: refix false positive BUG in page_move_anon_rmap()
2016-07-15 14:54:27 +09:00
add down_write_killable_nested()
2016-05-26 00:04:58 -04:00
Clarify naming of thread info/stack allocators
2016-06-24 15:09:37 -07:00
sctp: sctp_diag should dump sctp socket type
2016-05-31 11:59:06 -07:00
Merge branch 'work.const-path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-05-17 14:41:03 -07:00
locking/seqcount: Re-fix raw_read_seqcount_latch()
2016-06-03 08:37:25 +02:00
signal: move the "sig < SIGRTMIN" check into siginmask(sig)
2016-05-23 17:04:14 -07:00
net_sched: fix mirrored packets checksum
2016-07-01 16:19:34 -04:00
include/linux: apply __malloc attribute
2016-05-19 19:12:14 -07:00
mm: SLAB freelist randomization
2016-05-19 19:12:14 -07:00
mm: slub: remove unused virt_to_obj()
2016-05-26 15:35:44 -07:00
sock_diag: do not broadcast raw socket destruction
2016-06-28 09:08:51 -04:00
include/linux: apply __malloc attribute
2016-05-19 19:12:14 -07:00
fs/namei.c: Add hashlen_string() function
2016-05-28 15:42:50 -04:00
mm, oom: rework oom detection
2016-05-20 17:58:30 -07:00
include/linux/syscalls.h: use pid_t instead of int
2016-05-20 17:58:30 -07:00
thermal: add the note for set_trip_temp
2016-06-01 22:25:48 +08:00
time: remove timespec_add_safe()
2016-05-19 19:12:14 -07:00
time: Make settimeofday error checking work again
2016-06-01 21:13:43 +02:00
This includes two new updates for the ftrace infrastructure.
2016-05-18 18:55:19 -07:00
TTY and Serial driver update for 4.7-rc1
2016-05-20 20:57:27 -07:00
signal: make oom_flags a bool
2016-05-23 17:04:14 -07:00
lib/uuid.c: remove FSF address
2016-05-20 17:58:30 -07:00
virtio: new feature to detect IOMMU device quirk
2016-08-01 21:44:52 +03:00
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2016-05-23 11:48:48 -07:00
mm, page_alloc: inline zone_statistics
2016-05-19 19:12:14 -07:00
switch ->setxattr() to passing dentry and inode separately
2016-05-27 20:09:16 -04:00
zsmalloc: require GFP in zs_malloc()
2016-05-20 17:58:30 -07:00
