https://github.com/torvalds/linux
Revision 910170442944e1f8674fd5ddbeeb8ccd1877ea98 authored by David Woodhouse on 12 September 2016, 02:49:11 UTC, committed by David Woodhouse on 19 November 2016, 17:42:35 UTC
Somehow I ended up with an off-by-three error in calculating the size of the PASID and PASID State tables, which triggers allocations failures as those tables unfortunately have to be physically contiguous. In fact, even the *correct* maximum size of 8MiB is problematic and is wont to lead to allocation failures. Since I have extracted a promise that this *will* be fixed in hardware, I'm happy to limit it on the current hardware to a maximum of 0x20000 PASIDs, which gives us 1MiB tables — still not ideal, but better than before. Reported by Mika Kuoppala <mika.kuoppala@linux.intel.com> and also by Xunlei Pang <xlpang@redhat.com> who submitted a simpler patch to fix only the allocation (and not the free) to the "correct" limit... which was still problematic. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: stable@vger.kernel.org
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Tip revision: 910170442944e1f8674fd5ddbeeb8ccd1877ea98 authored by David Woodhouse on 12 September 2016, 02:49:11 UTC
iommu/vt-d: Fix PASID table allocation
iommu/vt-d: Fix PASID table allocation
Tip revision: 9101704
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affs | ||
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logfs | ||
minix | ||
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Kconfig | -rw-r--r-- | 7.2 KB |
Kconfig.binfmt | -rw-r--r-- | 7.2 KB |
Makefile | -rw-r--r-- | 4.3 KB |
aio.c | -rw-r--r-- | 43.1 KB |
anon_inodes.c | -rw-r--r-- | 4.9 KB |
attr.c | -rw-r--r-- | 9.1 KB |
bad_inode.c | -rw-r--r-- | 4.3 KB |
binfmt_aout.c | -rw-r--r-- | 10.7 KB |
binfmt_elf.c | -rw-r--r-- | 60.8 KB |
binfmt_elf_fdpic.c | -rw-r--r-- | 46.9 KB |
binfmt_em86.c | -rw-r--r-- | 2.8 KB |
binfmt_flat.c | -rw-r--r-- | 27.8 KB |
binfmt_misc.c | -rw-r--r-- | 18.3 KB |
binfmt_script.c | -rw-r--r-- | 3.0 KB |
block_dev.c | -rw-r--r-- | 49.7 KB |
buffer.c | -rw-r--r-- | 90.3 KB |
char_dev.c | -rw-r--r-- | 13.5 KB |
compat.c | -rw-r--r-- | 37.1 KB |
compat_binfmt_elf.c | -rw-r--r-- | 3.7 KB |
compat_ioctl.c | -rw-r--r-- | 45.7 KB |
coredump.c | -rw-r--r-- | 20.6 KB |
dax.c | -rw-r--r-- | 40.6 KB |
dcache.c | -rw-r--r-- | 93.5 KB |
dcookies.c | -rw-r--r-- | 6.9 KB |
direct-io.c | -rw-r--r-- | 38.6 KB |
drop_caches.c | -rw-r--r-- | 1.6 KB |
eventfd.c | -rw-r--r-- | 12.9 KB |
eventpoll.c | -rw-r--r-- | 60.1 KB |
exec.c | -rw-r--r-- | 43.7 KB |
fcntl.c | -rw-r--r-- | 16.7 KB |
fhandle.c | -rw-r--r-- | 6.5 KB |
file.c | -rw-r--r-- | 23.6 KB |
file_table.c | -rw-r--r-- | 8.5 KB |
filesystems.c | -rw-r--r-- | 6.4 KB |
fs-writeback.c | -rw-r--r-- | 70.4 KB |
fs_pin.c | -rw-r--r-- | 2.0 KB |
fs_struct.c | -rw-r--r-- | 3.3 KB |
inode.c | -rw-r--r-- | 55.0 KB |
internal.h | -rw-r--r-- | 4.7 KB |
ioctl.c | -rw-r--r-- | 17.2 KB |
iomap.c | -rw-r--r-- | 14.0 KB |
libfs.c | -rw-r--r-- | 30.3 KB |
locks.c | -rw-r--r-- | 73.3 KB |
mbcache.c | -rw-r--r-- | 12.0 KB |
mount.h | -rw-r--r-- | 3.6 KB |
mpage.c | -rw-r--r-- | 20.6 KB |
namei.c | -rw-r--r-- | 120.0 KB |
namespace.c | -rw-r--r-- | 83.3 KB |
no-block.c | -rw-r--r-- | 688 bytes |
nsfs.c | -rw-r--r-- | 5.2 KB |
open.c | -rw-r--r-- | 27.6 KB |
pipe.c | -rw-r--r-- | 27.3 KB |
pnode.c | -rw-r--r-- | 11.4 KB |
pnode.h | -rw-r--r-- | 1.9 KB |
posix_acl.c | -rw-r--r-- | 21.4 KB |
proc_namespace.c | -rw-r--r-- | 7.8 KB |
read_write.c | -rw-r--r-- | 40.6 KB |
readdir.c | -rw-r--r-- | 7.3 KB |
select.c | -rw-r--r-- | 25.7 KB |
seq_file.c | -rw-r--r-- | 23.0 KB |
signalfd.c | -rw-r--r-- | 9.2 KB |
splice.c | -rw-r--r-- | 39.8 KB |
stack.c | -rw-r--r-- | 2.5 KB |
stat.c | -rw-r--r-- | 11.9 KB |
statfs.c | -rw-r--r-- | 5.3 KB |
super.c | -rw-r--r-- | 36.7 KB |
sync.c | -rw-r--r-- | 9.9 KB |
timerfd.c | -rw-r--r-- | 13.2 KB |
userfaultfd.c | -rw-r--r-- | 35.3 KB |
utimes.c | -rw-r--r-- | 5.5 KB |
xattr.c | -rw-r--r-- | 23.5 KB |
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