KVM: VMX: use kvm_fast_pio_in for handling IN I/O

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Fast emulation of processor I/O for IN was disabled on x86 (both VMX
and SVM) some years ago due to a buggy implementation.  The addition
of kvm_fast_pio_in(), used by SVM, re-introduced (functional!) fast
emulation of IN.  Piggyback SVM's work and use kvm_fast_pio_in() on
VMX instead of performing full emulation of IN.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2018-03-08 08:57:26 -08:00 • committed by Paolo Bonzini

parent 2bb8cafea8

commit 432baf60ee

1 changed files with 6 additions and 3 deletions

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arch/x86/kvm/vmx.c

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