KVM: VMX: Skip pointless MSR bitmap update when setting EFER

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Split setup_msrs() into vmx_setup_uret_msrs() and an open coded refresh
of the MSR bitmap, and skip the latter when refreshing the user return
MSRs during an EFER load.  Only the x2APIC MSRs are dynamically exposed
and hidden, and those are not affected by a change in EFER.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210713163324.627647-34-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2021-07-13 09:33:11 -07:00 • committed by Paolo Bonzini

parent d0f9f826d8

commit 400dd54b37

1 changed files with 10 additions and 9 deletions

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arch/x86/kvm/vmx/vmx.c

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