From 8be5453f95933340a42c6e7fc7b66f3bb786fddd Mon Sep 17 00:00:00 2001 From: Zhang Xiantao Date: Sun, 2 Dec 2007 22:35:57 +0800 Subject: [PATCH] KVM: Replace kvm_lapic with kvm_vcpu in ioapic/lapic interface This patch replaces lapic structure with kvm_vcpu in ioapic.c, making ioapic independent of the local apic, as required by ia64. Signed-off-by: Zhang Xiantao Signed-off-by: Avi Kivity --- drivers/kvm/ioapic.c | 18 ++++++++---------- drivers/kvm/irq.h | 5 +++-- drivers/kvm/lapic.c | 23 ++++++++++++++++++----- 3 files changed, 29 insertions(+), 17 deletions(-) diff --git a/drivers/kvm/ioapic.c b/drivers/kvm/ioapic.c index cf1d50b3549b..3629867a76bc 100644 --- a/drivers/kvm/ioapic.c +++ b/drivers/kvm/ioapic.c @@ -136,7 +136,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val) } static void ioapic_inj_irq(struct kvm_ioapic *ioapic, - struct kvm_lapic *target, + struct kvm_vcpu *vcpu, u8 vector, u8 trig_mode, u8 delivery_mode) { ioapic_debug("irq %d trig %d deliv %d\n", vector, trig_mode, @@ -145,7 +145,7 @@ static void ioapic_inj_irq(struct kvm_ioapic *ioapic, ASSERT((delivery_mode == dest_Fixed) || (delivery_mode == dest_LowestPrio)); - kvm_apic_set_irq(target, vector, trig_mode); + kvm_apic_set_irq(vcpu, vector, trig_mode); } static u32 ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest, @@ -196,7 +196,6 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq) u8 vector = ioapic->redirtbl[irq].fields.vector; u8 trig_mode = ioapic->redirtbl[irq].fields.trig_mode; u32 deliver_bitmask; - struct kvm_lapic *target; struct kvm_vcpu *vcpu; int vcpu_id; @@ -212,13 +211,13 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq) switch (delivery_mode) { case dest_LowestPrio: - target = - kvm_apic_round_robin(ioapic->kvm, vector, deliver_bitmask); - if (target != NULL) - ioapic_inj_irq(ioapic, target, vector, + vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector, + deliver_bitmask); + if (vcpu != NULL) + ioapic_inj_irq(ioapic, vcpu, vector, trig_mode, delivery_mode); else - ioapic_debug("null round robin: " + ioapic_debug("null lowest prio vcpu: " "mask=%x vector=%x delivery_mode=%x\n", deliver_bitmask, vector, dest_LowestPrio); break; @@ -229,8 +228,7 @@ static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq) deliver_bitmask &= ~(1 << vcpu_id); vcpu = ioapic->kvm->vcpus[vcpu_id]; if (vcpu) { - target = vcpu->apic; - ioapic_inj_irq(ioapic, target, vector, + ioapic_inj_irq(ioapic, vcpu, vector, trig_mode, delivery_mode); } } diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h index 5ad3cfd7622d..78a34dde1cb9 100644 --- a/drivers/kvm/irq.h +++ b/drivers/kvm/irq.h @@ -145,14 +145,15 @@ void kvm_free_lapic(struct kvm_vcpu *vcpu); u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu); void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8); void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value); -struct kvm_lapic *kvm_apic_round_robin(struct kvm *kvm, u8 vector, + +struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector, unsigned long bitmap); u64 kvm_get_apic_base(struct kvm_vcpu *vcpu); void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data); int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest); void kvm_ioapic_update_eoi(struct kvm *kvm, int vector); int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda); -int kvm_apic_set_irq(struct kvm_lapic *apic, u8 vec, u8 trig); +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig); void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu); int kvm_ioapic_init(struct kvm *kvm); void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level); diff --git a/drivers/kvm/lapic.c b/drivers/kvm/lapic.c index 64f74bd7093a..5efa6c0276c6 100644 --- a/drivers/kvm/lapic.c +++ b/drivers/kvm/lapic.c @@ -185,8 +185,10 @@ int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu) } EXPORT_SYMBOL_GPL(kvm_lapic_find_highest_irr); -int kvm_apic_set_irq(struct kvm_lapic *apic, u8 vec, u8 trig) +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig) { + struct kvm_lapic *apic = vcpu->apic; + if (!apic_test_and_set_irr(vec, apic)) { /* a new pending irq is set in IRR */ if (trig) @@ -394,7 +396,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, return result; } -struct kvm_lapic *kvm_apic_round_robin(struct kvm *kvm, u8 vector, +static struct kvm_lapic *kvm_apic_round_robin(struct kvm *kvm, u8 vector, unsigned long bitmap) { int last; @@ -422,6 +424,17 @@ struct kvm_lapic *kvm_apic_round_robin(struct kvm *kvm, u8 vector, return apic; } +struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector, + unsigned long bitmap) +{ + struct kvm_lapic *apic; + + apic = kvm_apic_round_robin(kvm, vector, bitmap); + if (apic) + return apic->vcpu; + return NULL; +} + static void apic_set_eoi(struct kvm_lapic *apic) { int vector = apic_find_highest_isr(apic); @@ -453,7 +466,7 @@ static void apic_send_ipi(struct kvm_lapic *apic) unsigned int delivery_mode = icr_low & APIC_MODE_MASK; unsigned int vector = icr_low & APIC_VECTOR_MASK; - struct kvm_lapic *target; + struct kvm_vcpu *target; struct kvm_vcpu *vcpu; unsigned long lpr_map = 0; int i; @@ -480,9 +493,9 @@ static void apic_send_ipi(struct kvm_lapic *apic) } if (delivery_mode == APIC_DM_LOWEST) { - target = kvm_apic_round_robin(vcpu->kvm, vector, lpr_map); + target = kvm_get_lowest_prio_vcpu(vcpu->kvm, vector, lpr_map); if (target != NULL) - __apic_accept_irq(target, delivery_mode, + __apic_accept_irq(target->apic, delivery_mode, vector, level, trig_mode); } } -- 2.20.1