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 |
|---|---|---|
| kasan | ||
| Kconfig | -rw-r--r-- | 24.0 KB |
| Kconfig.debug | -rw-r--r-- | 3.6 KB |
| Makefile | -rw-r--r-- | 3.4 KB |
| backing-dev.c | -rw-r--r-- | 26.3 KB |
| balloon_compaction.c | -rw-r--r-- | 4.7 KB |
| bootmem.c | -rw-r--r-- | 20.8 KB |
| cleancache.c | -rw-r--r-- | 9.9 KB |
| cma.c | -rw-r--r-- | 12.2 KB |
| cma.h | -rw-r--r-- | 515 bytes |
| cma_debug.c | -rw-r--r-- | 4.4 KB |
| compaction.c | -rw-r--r-- | 56.7 KB |
| debug.c | -rw-r--r-- | 4.2 KB |
| debug_page_ref.c | -rw-r--r-- | 1.3 KB |
| dmapool.c | -rw-r--r-- | 13.8 KB |
| early_ioremap.c | -rw-r--r-- | 6.2 KB |
| fadvise.c | -rw-r--r-- | 4.0 KB |
| failslab.c | -rw-r--r-- | 1.4 KB |
| filemap.c | -rw-r--r-- | 77.4 KB |
| frame_vector.c | -rw-r--r-- | 6.1 KB |
| frontswap.c | -rw-r--r-- | 14.3 KB |
| gup.c | -rw-r--r-- | 42.6 KB |
| highmem.c | -rw-r--r-- | 11.7 KB |
| huge_memory.c | -rw-r--r-- | 63.0 KB |
| hugetlb.c | -rw-r--r-- | 120.2 KB |
| hugetlb_cgroup.c | -rw-r--r-- | 10.9 KB |
| hwpoison-inject.c | -rw-r--r-- | 3.2 KB |
| init-mm.c | -rw-r--r-- | 619 bytes |
| internal.h | -rw-r--r-- | 15.3 KB |
| interval_tree.c | -rw-r--r-- | 3.1 KB |
| khugepaged.c | -rw-r--r-- | 48.0 KB |
| kmemcheck.c | -rw-r--r-- | 2.9 KB |
| kmemleak-test.c | -rw-r--r-- | 3.2 KB |
| kmemleak.c | -rw-r--r-- | 56.0 KB |
| ksm.c | -rw-r--r-- | 63.5 KB |
| list_lru.c | -rw-r--r-- | 12.6 KB |
| maccess.c | -rw-r--r-- | 3.0 KB |
| madvise.c | -rw-r--r-- | 19.4 KB |
| memblock.c | -rw-r--r-- | 49.5 KB |
| memcontrol.c | -rw-r--r-- | 154.2 KB |
| memory-failure.c | -rw-r--r-- | 49.1 KB |
| memory.c | -rw-r--r-- | 110.4 KB |
| memory_hotplug.c | -rw-r--r-- | 55.4 KB |
| mempolicy.c | -rw-r--r-- | 71.3 KB |
| mempool.c | -rw-r--r-- | 13.9 KB |
| memtest.c | -rw-r--r-- | 2.7 KB |
| migrate.c | -rw-r--r-- | 52.1 KB |
| mincore.c | -rw-r--r-- | 6.7 KB |
| mlock.c | -rw-r--r-- | 22.5 KB |
| mm_init.c | -rw-r--r-- | 4.8 KB |
| mmap.c | -rw-r--r-- | 94.7 KB |
| mmu_context.c | -rw-r--r-- | 1.3 KB |
| mmu_notifier.c | -rw-r--r-- | 11.7 KB |
| mmzone.c | -rw-r--r-- | 2.4 KB |
| mprotect.c | -rw-r--r-- | 13.0 KB |
| mremap.c | -rw-r--r-- | 15.1 KB |
| msync.c | -rw-r--r-- | 2.6 KB |
| nobootmem.c | -rw-r--r-- | 11.1 KB |
| nommu.c | -rw-r--r-- | 48.4 KB |
| oom_kill.c | -rw-r--r-- | 28.6 KB |
| page-writeback.c | -rw-r--r-- | 84.3 KB |
| page_alloc.c | -rw-r--r-- | 201.7 KB |
| page_counter.c | -rw-r--r-- | 4.8 KB |
| page_ext.c | -rw-r--r-- | 11.4 KB |
| page_idle.c | -rw-r--r-- | 5.4 KB |
| page_io.c | -rw-r--r-- | 9.5 KB |
| page_isolation.c | -rw-r--r-- | 8.4 KB |
| page_owner.c | -rw-r--r-- | 14.7 KB |
| page_poison.c | -rw-r--r-- | 3.5 KB |
| pagewalk.c | -rw-r--r-- | 7.5 KB |
| percpu-km.c | -rw-r--r-- | 2.8 KB |
| percpu-vm.c | -rw-r--r-- | 10.0 KB |
| percpu.c | -rw-r--r-- | 66.2 KB |
| pgtable-generic.c | -rw-r--r-- | 4.8 KB |
| process_vm_access.c | -rw-r--r-- | 10.0 KB |
| quicklist.c | -rw-r--r-- | 2.4 KB |
| readahead.c | -rw-r--r-- | 15.5 KB |
| rmap.c | -rw-r--r-- | 51.2 KB |
| shmem.c | -rw-r--r-- | 105.7 KB |
| slab.c | -rw-r--r-- | 111.4 KB |
| slab.h | -rw-r--r-- | 13.3 KB |
| slab_common.c | -rw-r--r-- | 31.2 KB |
| slob.c | -rw-r--r-- | 16.0 KB |
| slub.c | -rw-r--r-- | 138.3 KB |
| sparse-vmemmap.c | -rw-r--r-- | 7.8 KB |
| sparse.c | -rw-r--r-- | 20.8 KB |
| swap.c | -rw-r--r-- | 27.0 KB |
| swap_cgroup.c | -rw-r--r-- | 4.6 KB |
| swap_state.c | -rw-r--r-- | 13.2 KB |
| swapfile.c | -rw-r--r-- | 77.0 KB |
| truncate.c | -rw-r--r-- | 24.0 KB |
| usercopy.c | -rw-r--r-- | 7.7 KB |
| userfaultfd.c | -rw-r--r-- | 7.2 KB |
| util.c | -rw-r--r-- | 15.9 KB |
| vmacache.c | -rw-r--r-- | 3.1 KB |
| vmalloc.c | -rw-r--r-- | 68.6 KB |
| vmpressure.c | -rw-r--r-- | 12.5 KB |
| vmscan.c | -rw-r--r-- | 110.9 KB |
| vmstat.c | -rw-r--r-- | 47.4 KB |
| workingset.c | -rw-r--r-- | 16.8 KB |
| z3fold.c | -rw-r--r-- | 21.3 KB |
| zbud.c | -rw-r--r-- | 18.2 KB |
| zpool.c | -rw-r--r-- | 10.0 KB |
| zsmalloc.c | -rw-r--r-- | 60.3 KB |
| zswap.c | -rw-r--r-- | 32.3 KB |
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