Revert "KVM: SVM: Skip WRMSR fastpath on VM-Exit if next RIP isn't valid"

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Now that handle_fastpath_set_msr_irqoff() acquires kvm->srcu, i.e. allows
dereferencing memslots during WRMSR emulation, drop the requirement that
"next RIP" is valid.  In hindsight, acquiring kvm->srcu would have been a
better fix than avoiding the pastpath, but at the time it was thought that
accessing SRCU-protected data in the fastpath was a one-off edge case.

This reverts commit 5c30e8101e.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20230721224337.2335137-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2023-07-21 15:43:37 -07:00 • committed by Paolo Bonzini

parent 3f2739bd1e

commit b439eb8ab5

1 changed files with 2 additions and 8 deletions

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arch/x86/kvm/svm/svm.c

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