diff options
| author | Yan Zhao <yan.y.zhao@intel.com> | 2019-06-24 17:18:10 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-07-05 22:16:46 +0200 |
| commit | d6d10793dcfa33504745be40b49bd747ff8752ef (patch) | |
| tree | 5e95f811da1f15b8d11b00841428dfe79f5934a4 | |
| parent | 9dc83cd9c3cd766263a7180bccaf67afe970d816 (diff) | |
intel_iommu: Fix incorrect "end" for vtd_address_space_unmap
IOMMUNotifier is with inclusive ranges, so we should check
against (VTD_ADDRESS_SIZE(s->aw_bits) - 1).
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
[peterx: split from another bigger patch]
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20190624091811.30412-2-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | hw/i386/intel_iommu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 44b1231157..719ce19ab3 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3379,12 +3379,12 @@ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n) * VT-d spec), otherwise we need to consider overflow of 64 bits. */ - if (end > VTD_ADDRESS_SIZE(s->aw_bits)) { + if (end > VTD_ADDRESS_SIZE(s->aw_bits) - 1) { /* * Don't need to unmap regions that is bigger than the whole * VT-d supported address space size */ - end = VTD_ADDRESS_SIZE(s->aw_bits); + end = VTD_ADDRESS_SIZE(s->aw_bits) - 1; } assert(start <= end); |