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| author | Sean Christopherson <seanjc@google.com> | 2021-11-02 10:15:29 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-12-08 10:25:15 +0100 |
| commit | 5e854864ee4384736f27a986633bae21731a4e4e (patch) | |
| tree | c3c79af85352c073e7fc46fa735e0c3c3e828059 /arch/x86/include | |
| parent | KVM: Clear pv eoi pending bit only when it is set (diff) | |
| download | linux-5e854864ee4384736f27a986633bae21731a4e4e.tar.xz linux-5e854864ee4384736f27a986633bae21731a4e4e.zip | |
KVM: x86: Handle 32-bit wrap of EIP for EMULTYPE_SKIP with flat code seg
Truncate the new EIP to a 32-bit value when handling EMULTYPE_SKIP as the
decode phase does not truncate _eip. Wrapping the 32-bit boundary is
legal if and only if CS is a flat code segment, but that check is
implicitly handled in the form of limit checks in the decode phase.
Opportunstically prepare for a future fix by storing the result of any
truncation in "eip" instead of "_eip".
Fixes: 1957aa63be53 ("KVM: VMX: Handle single-step #DB for EMULTYPE_SKIP on EPT misconfig")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <093eabb1eab2965201c9b018373baf26ff256d85.1635842679.git.houwenlong93@linux.alibaba.com>
Diffstat (limited to 'arch/x86/include')
0 files changed, 0 insertions, 0 deletions