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x86/mm/iommu/sva: Fix error code for LAM enabling failure due to SVA

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Normally, LAM and SVA are mutually exclusive. LAM enabling will fail if
SVA is already in use.

Correct error code for the failure. EINTR is nonsensical there.

Fixes: 23e5d9ec2b ("x86/mm/iommu/sva: Make LAM and SVA mutually exclusive")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Link: https://lore.kernel.org/all/CACT4Y+YfqSMsZArhh25TESmG-U4jO5Hjphz87wKSnTiaw2Wrfw@mail.gmail.com
Link: https://lore.kernel.org/all/20230403111020.3136-2-kirill.shutemov%40linux.intel.com
This commit is contained in:
Kirill A. Shutemov 2023-04-03 14:10:19 +03:00 committed by Dave Hansen
parent dfd7a1569e
commit fca1fdd2b0
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/process_64.c
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@ -758,7 +758,7 @@ static int prctl_enable_tagged_addr(struct mm_struct *mm, unsigned long nr_bits)
if (mm_valid_pasid(mm) &&
!test_bit(MM_CONTEXT_FORCE_TAGGED_SVA, &mm->context.flags))
return -EINTR;
return -EINVAL;
if (mmap_write_lock_killable(mm))
return -EINTR;