KVM: x86: dump_vmcs should not assume GUEST_IA32_EFER is valid

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If the VM entry/exit controls for loading/saving MSR_EFER are either
not available (an older processor or explicitly disabled) or not
used (host and guest values are the same), reading GUEST_IA32_EFER
from the VMCS returns an inaccurate value.

Because of this, in dump_vmcs() don't use GUEST_IA32_EFER to decide
whether to print the PDPTRs - always do so if the fields exist.

Fixes: 4eb64dce8d ("KVM: x86: dump VMCS on invalid entry")
Signed-off-by: David Edmondson <david.edmondson@oracle.com>
Message-Id: <20210318120841.133123-2-david.edmondson@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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David Edmondson 2021-03-18 12:08:37 +00:00 • committed by Paolo Bonzini

parent adc2a23734

commit d9e46d344e

1 changed files with 3 additions and 6 deletions

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arch/x86/kvm/vmx/vmx.c

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