xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: Return destination vcpu on interrupt injection

Browse Source 
Add a new parameter to know vcpus who received the interrupt.

Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Yang Zhang
2013-04-11 19:21:37 +08:00
committed by Marcelo Tosatti
parent 8dc6aade5b
commit b4f2225c07
5 changed files with 27 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
arch/x86/kvm/lapic.c
View File

@@ -384,14 +384,16 @@ int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu)
}
static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
int vector, int level, int trig_mode);
int vector, int level, int trig_mode,
unsigned long *dest_map);
int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
unsigned long *dest_map)
{
struct kvm_lapic *apic = vcpu->arch.apic;
return __apic_accept_irq(apic, irq->delivery_mode, irq->vector,
irq->level, irq->trig_mode);
irq->level, irq->trig_mode, dest_map);
}
static int pv_eoi_put_user(struct kvm_vcpu *vcpu, u8 val)
@@ -564,7 +566,7 @@ int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
}
bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
struct kvm_lapic_irq *irq, int *r)
struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map)
{
struct kvm_apic_map *map;
unsigned long bitmap = 1;
@@ -575,7 +577,7 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
*r = -1;
if (irq->shorthand == APIC_DEST_SELF) {
*r = kvm_apic_set_irq(src->vcpu, irq);
*r = kvm_apic_set_irq(src->vcpu, irq, dest_map);
return true;
}
@@ -620,7 +622,7 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
continue;
if (*r < 0)
*r = 0;
*r += kvm_apic_set_irq(dst[i]->vcpu, irq);
*r += kvm_apic_set_irq(dst[i]->vcpu, irq, dest_map);
}
ret = true;
@@ -634,7 +636,8 @@ out:
* Return 1 if successfully added and 0 if discarded.
*/
static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
int vector, int level, int trig_mode)
int vector, int level, int trig_mode,
unsigned long *dest_map)
{
int result = 0;
struct kvm_vcpu *vcpu = apic->vcpu;
@@ -647,6 +650,9 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
if (unlikely(!apic_enabled(apic)))
break;
if (dest_map)
__set_bit(vcpu->vcpu_id, dest_map);
if (trig_mode) {
apic_debug("level trig mode for vector %d", vector);
apic_set_vector(vector, apic->regs + APIC_TMR);
@@ -805,7 +811,7 @@ static void apic_send_ipi(struct kvm_lapic *apic)
irq.trig_mode, irq.level, irq.dest_mode, irq.delivery_mode,
irq.vector);
kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq);
kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq, NULL);
}
static u32 apic_get_tmcct(struct kvm_lapic *apic)
@@ -1441,7 +1447,8 @@ int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type)
vector = reg & APIC_VECTOR_MASK;
mode = reg & APIC_MODE_MASK;
trig_mode = reg & APIC_LVT_LEVEL_TRIGGER;
return __apic_accept_irq(apic, mode, vector, 1, trig_mode);
return __apic_accept_irq(apic, mode, vector, 1, trig_mode,
NULL);
}
return 0;
}