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KVM: x86: add kvm_fast_pio() to consolidate fast PIO code

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Add kvm_fast_pio() to consolidate duplicate code in VMX and SVM.
Unexport kvm_fast_pio_in() and kvm_fast_pio_out().

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2018-03-08 08:57:27 -08:00
committed by Paolo Bonzini
parent 432baf60ee
commit dca7f1284f
4 changed files with 24 additions and 27 deletions
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13
arch/x86/kvm/vmx.c
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@@ -6265,7 +6265,7 @@ static int handle_triple_fault(struct kvm_vcpu *vcpu)
static int handle_io(struct kvm_vcpu *vcpu)
{
unsigned long exit_qualification;
int size, in, string, ret;
int size, in, string;
unsigned port;
exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
@@ -6280,16 +6280,7 @@ static int handle_io(struct kvm_vcpu *vcpu)
size = (exit_qualification & 7) + 1;
in = (exit_qualification & 8) != 0;
ret = kvm_skip_emulated_instruction(vcpu);
/*
* TODO: we might be squashing a KVM_GUESTDBG_SINGLESTEP-triggered
* KVM_EXIT_DEBUG here.
*/
if (in)
return kvm_fast_pio_in(vcpu, size, port) && ret;
else
return kvm_fast_pio_out(vcpu, size, port) && ret;
return kvm_fast_pio(vcpu, size, port, in);
}
static void