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| author | Sean Christopherson <seanjc@google.com> | 2021-04-22 05:21:24 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-04-26 12:27:12 +0300 |
| commit | ee050a577523dfd5fac95e6cc182ebe0293ead59 (patch) | |
| tree | 72b296253ceac636d9e9c8ca57d05a7a73b7755a /tools/perf/scripts/python/compaction-times.py | |
| parent | d8971344f5739a9cc53f91f1f593ddd82265b93b (diff) | |
| download | linux-ee050a577523dfd5fac95e6cc182ebe0293ead59.tar.xz | |
KVM: nVMX: Truncate bits 63:32 of VMCS field on nested check in !64-bit
Drop bits 63:32 of the VMCS field encoding when checking for a nested
VM-Exit on VMREAD/VMWRITE in !64-bit mode. VMREAD and VMWRITE always
use 32-bit operands outside of 64-bit mode.
The actual emulation of VMREAD/VMWRITE does the right thing, this bug is
purely limited to incorrectly causing a nested VM-Exit if a GPR happens
to have bits 63:32 set outside of 64-bit mode.
Fixes: a7cde481b6e8 ("KVM: nVMX: Do not forward VMREAD/VMWRITE VMExits to L1 if required so by vmcs12 vmread/vmwrite bitmaps")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210422022128.3464144-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/compaction-times.py')
0 files changed, 0 insertions, 0 deletions