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| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-04-11 19:21:37 +0800 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-04-15 23:20:34 -0300 |
| commit | b4f2225c07dd4d8eef7aa7f5b36a3b72c3cbbe5b (patch) | |
| tree | 47cecd1a3cec51c6dee70e8558aa749b744ca0e9 /arch/x86/kvm/lapic.c | |
| parent | 8dc6aade5bdc9d436d4ab8328cb15f0adbbc47bf (diff) | |
| download | linux-b4f2225c07dd4d8eef7aa7f5b36a3b72c3cbbe5b.tar.gz | |
KVM: Return destination vcpu on interrupt injection
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>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 3e22536a7031..0b734025fc87 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -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; } |