Signed-off-by: Gleb Natapov <g...@redhat.com>
---
arch/x86/kvm/irq.c | 39 +++++++++++++++++++++++----------------
arch/x86/kvm/svm.c | 11 +++++++----
arch/x86/kvm/vmx.c | 18 +++++++++---------
arch/x86/kvm/x86.c | 4 ++--
4 files changed, 41 insertions(+), 31 deletions(-)
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index cf17ed5..6974e7c 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -24,6 +24,7 @@
#include "irq.h"
#include "i8254.h"
+#include "x86.h"
/*
* check if there are pending timer events
@@ -48,14 +49,17 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
{
struct kvm_pic *s;
- if (kvm_apic_has_interrupt(v) == -1) { /* LAPIC */
- if (kvm_apic_accept_pic_intr(v)) {
- s = pic_irqchip(v->kvm); /* PIC */
- return s->output;
- } else
- return 0;
+ if (irqchip_in_kernel(v->kvm)) {
+ if (kvm_apic_has_interrupt(v) == -1) { /* LAPIC */
+ if (kvm_apic_accept_pic_intr(v)) {
+ s = pic_irqchip(v->kvm); /* PIC */
+ return s->output;
+ } else
+ return 0;
+ }
+ return 1;
}
- return 1;
+ return v->arch.irq_summary;
}
EXPORT_SYMBOL_GPL(kvm_cpu_has_interrupt);
@@ -64,18 +68,21 @@ EXPORT_SYMBOL_GPL(kvm_cpu_has_interrupt);
*/
int kvm_cpu_get_interrupt(struct kvm_vcpu *v)
{
- struct kvm_pic *s;
- int vector;
+ if (irqchip_in_kernel(v->kvm)) {
+ struct kvm_pic *s;
+ int vector;
- vector = kvm_get_apic_interrupt(v); /* APIC */
- if (vector == -1) {
- if (kvm_apic_accept_pic_intr(v)) {
- s = pic_irqchip(v->kvm);
- s->output = 0; /* PIC */
- vector = kvm_pic_read_irq(v->kvm);
+ vector = kvm_get_apic_interrupt(v); /* APIC */
+ if (vector == -1) {
+ if (kvm_apic_accept_pic_intr(v)) {
+ s = pic_irqchip(v->kvm);
+ s->output = 0; /* PIC */
+ vector = kvm_pic_read_irq(v->kvm);
+ }
}
+ return vector;
}
- return vector;
+ return kvm_pop_irq(v);
}
EXPORT_SYMBOL_GPL(kvm_cpu_get_interrupt);
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 053f3c5..1903c27 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2089,8 +2089,9 @@ static int interrupt_window_interception(struct vcpu_svm
*svm,
* If the user space waits to inject interrupts, exit as soon as
* possible
*/
- if (kvm_run->request_interrupt_window &&
- !svm->vcpu.arch.irq_summary) {
+ if (!irqchip_in_kernel(svm->vcpu.kvm) &&
+ kvm_run->request_interrupt_window &&
+ !kvm_cpu_has_interrupt(&svm->vcpu)) {
++svm->vcpu.stat.irq_window_exits;
kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
return 0;
@@ -2371,7 +2372,8 @@ static void do_interrupt_requests(struct kvm_vcpu *vcpu,
(svm->vmcb->save.rflags & X86_EFLAGS_IF) &&
(svm->vcpu.arch.hflags & HF_GIF_MASK));
- if (svm->vcpu.arch.interrupt_window_open && svm->vcpu.arch.irq_summary)
+ if (svm->vcpu.arch.interrupt_window_open &&
+ kvm_cpu_has_interrupt(&svm->vcpu))
/*
* If interrupts enabled, and not blocked by sti or mov ss.
Good.
*/
@@ -2381,7 +2383,8 @@ static void do_interrupt_requests(struct kvm_vcpu *vcpu,
* Interrupts blocked. Wait for unblock.
*/
if (!svm->vcpu.arch.interrupt_window_open &&
- (svm->vcpu.arch.irq_summary || kvm_run->request_interrupt_window))
+ (kvm_cpu_has_interrupt(&svm->vcpu) ||
+ kvm_run->request_interrupt_window))
svm_set_vintr(svm);
else
svm_clear_vintr(svm);
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index c6997c0..b3292c1 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2535,21 +2535,20 @@ static void do_interrupt_requests(struct kvm_vcpu *vcpu,
vmx_inject_nmi(vcpu);
if (vcpu->arch.nmi_pending)
enable_nmi_window(vcpu);
- else if (vcpu->arch.irq_summary
- || kvm_run->request_interrupt_window)
+ else if (kvm_cpu_has_interrupt(vcpu) ||
+ kvm_run->request_interrupt_window)
enable_irq_window(vcpu);
return;
}
if (vcpu->arch.interrupt_window_open) {
- if (vcpu->arch.irq_summary && !vcpu->arch.interrupt.pending)
- kvm_queue_interrupt(vcpu, kvm_pop_irq(vcpu));
+ if (kvm_cpu_has_interrupt(vcpu) &&
!vcpu->arch.interrupt.pending)
+ kvm_queue_interrupt(vcpu, kvm_cpu_get_interrupt(vcpu));
if (vcpu->arch.interrupt.pending)
vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
- }
- if (!vcpu->arch.interrupt_window_open &&
- (vcpu->arch.irq_summary || kvm_run->request_interrupt_window))
+ } else if(kvm_cpu_has_interrupt(vcpu) ||
+ kvm_run->request_interrupt_window)
enable_irq_window(vcpu);
}
@@ -2976,8 +2975,9 @@ static int handle_interrupt_window(struct kvm_vcpu *vcpu,
* If the user space waits to inject interrupts, exit as soon as
* possible
*/
- if (kvm_run->request_interrupt_window &&
- !vcpu->arch.irq_summary) {
+ if (!irqchip_in_kernel(vcpu->kvm) &&
+ kvm_run->request_interrupt_window &&
+ !kvm_cpu_has_interrupt(vcpu)) {
kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
return 0;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 52c7a29..6e30cef 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3064,7 +3064,7 @@ EXPORT_SYMBOL_GPL(kvm_emulate_cpuid);
static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu,
struct kvm_run *kvm_run)
{
- return (!vcpu->arch.irq_summary &&
+ return (!irqchip_in_kernel(vcpu->kvm) && !kvm_cpu_has_interrupt(vcpu) &&
kvm_run->request_interrupt_window &&
vcpu->arch.interrupt_window_open &&
(kvm_x86_ops->get_rflags(vcpu) & X86_EFLAGS_IF));
@@ -3081,7 +3081,7 @@ static void post_kvm_run_save(struct kvm_vcpu *vcpu,
else
kvm_run->ready_for_interrupt_injection =
(vcpu->arch.interrupt_window_open &&
- vcpu->arch.irq_summary == 0);
+ !kvm_cpu_has_interrupt(vcpu));
}
static void vapic_enter(struct kvm_vcpu *vcpu)
--
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