KVM: nVMX: fix canonical check of vmcs12 HOST_RIP

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HOST_RIP canonical check should check the L1 of CR4.LA57 stored in
the vmcs12 rather than the current L1's because it is legal to change
the CR4.LA57 value during VM exit from L2 to L1.

This is a theoretical bug though, because it is highly unlikely that a
VM exit will change the CR4.LA57 from the value it had on VM entry.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20240906221824.491834-5-mlevitsk@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Maxim Levitsky 2024-09-06 18:18:24 -04:00 • committed by Sean Christopherson

parent 9245fd6b85

commit 90a877216e

1 changed files with 12 additions and 1 deletions

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arch/x86/kvm/vmx/nested.c

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