[PATCH 08/42] KVM: Call pic_clear_isr() on pic reset to reuse logic there

Avi Kivity
2009-11-16T12:29:51Z

From: Gleb Natapov <gleb@redhat.com>

Also move call of ack notifiers after pic state change.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/i8259.c | 22 +++++++++-------------
1 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 01f1516..ccc941a 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -225,22 +225,11 @@ int kvm_pic_read_irq(struct kvm *kvm)

void kvm_pic_reset(struct kvm_kpic_state *s)
{
- int irq, irqbase, n;
+ int irq;
struct kvm *kvm = s->pics_state->irq_request_opaque;
struct kvm_vcpu *vcpu0 = kvm->bsp_vcpu;
+ u8 irr = s->irr, isr = s->imr;

- if (s == &s->pics_state->pics[0])
- irqbase = 0;
- else
- irqbase = 8;
-
- for (irq = 0; irq < PIC_NUM_PINS/2; irq++) {
- if (vcpu0 && kvm_apic_accept_pic_intr(vcpu0))
- if (s->irr & (1 << irq) || s->isr & (1 << irq)) {
- n = irq + irqbase;
- kvm_notify_acked_irq(kvm, SELECT_PIC(n), n);
- }
- }
s->last_irr = 0;
s->irr = 0;
s->imr = 0;
@@ -256,6 +245,13 @@ void kvm_pic_reset(struct kvm_kpic_state *s)
s->rotate_on_auto_eoi = 0;
s->special_fully_nested_mode = 0;
s->init4 = 0;
+
+ for (irq = 0; irq < PIC_NUM_PINS/2; irq++) {
+ if (vcpu0 && kvm_apic_accept_pic_intr(vcpu0))
+ if (irr & (1 << irq) || isr & (1 << irq)) {
+ pic_clear_isr(s, irq);
+ }
+ }
}

static void pic_ioport_write(void *opaque, u32 addr, u32 val)
--
1.6.5.2