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| author | Sean Christopherson <[email protected]> | 2019-10-01 16:21:23 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2019-10-03 10:32:44 +0000 |
| commit | 567926cca99ba1750be8aae9c4178796bf9bb90b (patch) | |
| tree | 09629b2fce3fdbb2b62a4071797a5b7df0e565a8 /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | Merge tag 'kvmarm-fixes-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/g... (diff) | |
| download | kernel-567926cca99ba1750be8aae9c4178796bf9bb90b.tar.gz kernel-567926cca99ba1750be8aae9c4178796bf9bb90b.zip | |
KVM: nVMX: Fix consistency check on injected exception error code
Current versions of Intel's SDM incorrectly state that "bits 31:15 of
the VM-Entry exception error-code field" must be zero. In reality, bits
31:16 must be zero, i.e. error codes are 16-bit values.
The bogus error code check manifests as an unexpected VM-Entry failure
due to an invalid code field (error number 7) in L1, e.g. when injecting
a #GP with error_code=0x9f00.
Nadav previously reported the bug[*], both to KVM and Intel, and fixed
the associated kvm-unit-test.
[*] https://patchwork.kernel.org/patch/11124749/
Reported-by: Nadav Amit <[email protected]>
Cc: [email protected]
Signed-off-by: Sean Christopherson <[email protected]>
Reviewed-by: Jim Mattson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions