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KVM: Get rid of get_irq() callback 

It just returns pending IRQ vector from the queue for VMX/SVM.
Get IRQ directly from the queue before migration and put it back
after.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov 2009-04-21 17:45:11 +03:00 committed by Avi Kivity
parent 16d7a19117
commit 14d0bc1f7c
4 changed files with 5 additions and 24 deletions
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1
arch/x86/include/asm/kvm_host.h
View File

@ -510,7 +510,6 @@ struct kvm_x86_ops {
void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
void (*patch_hypercall)(struct kvm_vcpu *vcpu,
unsigned char *hypercall_addr);
int (*get_irq)(struct kvm_vcpu *vcpu);
void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
void (*set_nmi)(struct kvm_vcpu *vcpu);
void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,

8
arch/x86/kvm/svm.c
View File

@ -966,13 +966,6 @@ static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
return 0;
}
static int svm_get_irq(struct kvm_vcpu *vcpu)
{
if (!vcpu->arch.interrupt.pending)
return -1;
return vcpu->arch.interrupt.nr;
}
static void load_host_msrs(struct kvm_vcpu *vcpu)
{
#ifdef CONFIG_X86_64
@ -2647,7 +2640,6 @@ static struct kvm_x86_ops svm_x86_ops = {
.handle_exit = handle_exit,
.skip_emulated_instruction = skip_emulated_instruction,
.patch_hypercall = svm_patch_hypercall,
.get_irq = svm_get_irq,
.set_irq = svm_set_irq,
.set_nmi = svm_inject_nmi,
.queue_exception = svm_queue_exception,

8
arch/x86/kvm/vmx.c
View File

@ -1045,13 +1045,6 @@ static int set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
return 0;
}
static int vmx_get_irq(struct kvm_vcpu *vcpu)
{
if (!vcpu->arch.interrupt.pending)
return -1;
return vcpu->arch.interrupt.nr;
}
static __init int cpu_has_kvm_support(void)
{
return cpu_has_vmx();
@ -3634,7 +3627,6 @@ static struct kvm_x86_ops vmx_x86_ops = {
.handle_exit = vmx_handle_exit,
.skip_emulated_instruction = skip_emulated_instruction,
.patch_hypercall = vmx_patch_hypercall,
.get_irq = vmx_get_irq,
.set_irq = vmx_inject_irq,
.set_nmi = vmx_inject_nmi,
.queue_exception = vmx_queue_exception,

12
arch/x86/kvm/x86.c
View File

@ -3536,7 +3536,6 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs)
{
struct descriptor_table dt;
int pending_vec;
vcpu_load(vcpu);
@ -3573,9 +3572,9 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
memcpy(sregs->interrupt_bitmap, vcpu->arch.irq_pending,
sizeof sregs->interrupt_bitmap);
pending_vec = kvm_x86_ops->get_irq(vcpu);
if (pending_vec >= 0)
set_bit(pending_vec, (unsigned long *)sregs->interrupt_bitmap);
if (vcpu->arch.interrupt.pending)
set_bit(vcpu->arch.interrupt.nr,
(unsigned long *)sregs->interrupt_bitmap);
vcpu_put(vcpu);
@ -4097,9 +4096,8 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
max_bits);
/* Only pending external irq is handled here */
if (pending_vec < max_bits) {
kvm_x86_ops->set_irq(vcpu, pending_vec);
pr_debug("Set back pending irq %d\n",
pending_vec);
kvm_queue_interrupt(vcpu, pending_vec);
pr_debug("Set back pending irq %d\n", pending_vec);
}
kvm_pic_clear_isr_ack(vcpu->kvm);
}