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
1 parent 1c38718
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
| File | Mode | Size |
|---|---|---|
| partitions | ||
| Kconfig | -rw-r--r-- | 3.8 KB |
| Kconfig.iosched | -rw-r--r-- | 1.6 KB |
| Makefile | -rw-r--r-- | 949 bytes |
| badblocks.c | -rw-r--r-- | 14.5 KB |
| bio-integrity.c | -rw-r--r-- | 14.2 KB |
| bio.c | -rw-r--r-- | 48.5 KB |
| blk-cgroup.c | -rw-r--r-- | 35.8 KB |
| blk-core.c | -rw-r--r-- | 93.3 KB |
| blk-exec.c | -rw-r--r-- | 3.2 KB |
| blk-flush.c | -rw-r--r-- | 16.3 KB |
| blk-integrity.c | -rw-r--r-- | 12.3 KB |
| blk-ioc.c | -rw-r--r-- | 10.2 KB |
| blk-lib.c | -rw-r--r-- | 7.3 KB |
| blk-map.c | -rw-r--r-- | 5.8 KB |
| blk-merge.c | -rw-r--r-- | 19.6 KB |
| blk-mq-cpumap.c | -rw-r--r-- | 2.3 KB |
| blk-mq-pci.c | -rw-r--r-- | 1.5 KB |
| blk-mq-sysfs.c | -rw-r--r-- | 11.7 KB |
| blk-mq-tag.c | -rw-r--r-- | 11.1 KB |
| blk-mq-tag.h | -rw-r--r-- | 2.2 KB |
| blk-mq.c | -rw-r--r-- | 56.5 KB |
| blk-mq.h | -rw-r--r-- | 2.7 KB |
| blk-settings.c | -rw-r--r-- | 27.0 KB |
| blk-softirq.c | -rw-r--r-- | 4.3 KB |
| blk-sysfs.c | -rw-r--r-- | 18.5 KB |
| blk-tag.c | -rw-r--r-- | 10.0 KB |
| blk-throttle.c | -rw-r--r-- | 42.7 KB |
| blk-timeout.c | -rw-r--r-- | 5.9 KB |
| blk.h | -rw-r--r-- | 9.0 KB |
| bounce.c | -rw-r--r-- | 5.8 KB |
| bsg-lib.c | -rw-r--r-- | 6.0 KB |
| bsg.c | -rw-r--r-- | 22.9 KB |
| cfq-iosched.c | -rw-r--r-- | 127.1 KB |
| cmdline-parser.c | -rw-r--r-- | 4.9 KB |
| compat_ioctl.c | -rw-r--r-- | 20.8 KB |
| deadline-iosched.c | -rw-r--r-- | 11.3 KB |
| elevator.c | -rw-r--r-- | 23.8 KB |
| genhd.c | -rw-r--r-- | 45.0 KB |
| ioctl.c | -rw-r--r-- | 14.8 KB |
| ioprio.c | -rw-r--r-- | 5.1 KB |
| noop-iosched.c | -rw-r--r-- | 2.6 KB |
| partition-generic.c | -rw-r--r-- | 14.7 KB |
| scsi_ioctl.c | -rw-r--r-- | 19.4 KB |
| t10-pi.c | -rw-r--r-- | 4.8 KB |
Computing file changes ...
