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Sean Christopherson authored
Per commit 1b6269db ("KVM: VMX: Handle NMIs before enabling interrupts and preemption"), NMIs are handled directly in vmx_vcpu_run() to "make sure we handle NMI on the current cpu, and that we don't service maskable interrupts before non-maskable ones". The other exceptions handled by complete_atomic_exit(), e.g. async #PF and #MC, have similar requirements, and are located there to avoid extra VMREADs since VMX bins hardware exceptions and NMIs into a single exit reason. Clean up the code and eliminate the vaguely named complete_atomic_exit() by moving the interrupts-disabled exception and NMI handling into the existing handle_external_intrs() callback, and rename the callback to a more appropriate name. Rename VMexit handlers throughout so that the atomic and non-atomic counterparts have similar names. In addition to improving code readability, this also ensures the NMI handler is run with the host's debug registers loaded in the unlikely event that the user is debugging NMIs. Accuracy of the last_guest_tsc field is also improved when handling NMIs (and #MCs) as the handler will run after updating said field. Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> [Naming cleanups. - Paolo] Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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