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KVM: x86: introduce lapic_in_kernel

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Avoid pointer chasing and memory barriers, and simplify the code
when split irqchip (LAPIC in kernel, IOAPIC/PIC in userspace)
is introduced.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2015-07-29 12:05:37 +02:00
parent d50ab6c1a2
commit 35754c987f
7 changed files with 45 additions and 43 deletions
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6
arch/x86/kvm/irq.c
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@@ -57,7 +57,7 @@ static int kvm_cpu_has_extint(struct kvm_vcpu *v)
*/
int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v)
{
if (!irqchip_in_kernel(v->kvm))
if (!lapic_in_kernel(v))
return v->arch.interrupt.pending;
if (kvm_cpu_has_extint(v))
@@ -75,7 +75,7 @@ int kvm_cpu_has_injectable_intr(struct kvm_vcpu *v)
*/
int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
{
if (!irqchip_in_kernel(v->kvm))
if (!lapic_in_kernel(v))
return v->arch.interrupt.pending;
if (kvm_cpu_has_extint(v))
@@ -103,7 +103,7 @@ int kvm_cpu_get_interrupt(struct kvm_vcpu *v)
{
int vector;
if (!irqchip_in_kernel(v->kvm))
if (!lapic_in_kernel(v))
return v->arch.interrupt.nr;
vector = kvm_cpu_get_extint(v);