KVM: VMX: Invoke NMI handler via indirect call instead of INTn

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Rework NMI VM-Exit handling to invoke the kernel handler by function
call instead of INTn.  INTn microcode is relatively expensive, and
aligning the IRQ and NMI handling will make it easier to update KVM
should some newfangled method for invoking the handlers come along.

Suggested-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200915191505.10355-3-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2020-09-15 12:15:05 -07:00 • committed by Paolo Bonzini

parent 535f7ef2ab

commit 1a5488ef0d

1 changed files with 15 additions and 15 deletions

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arch/x86/kvm/vmx/vmx.c

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