[20/43] KVM: APIC: kvm_apic_set_irq deliver all kinds of interrupts

Message ID	1242638585-18470-21-git-send-email-avi@redhat.com (mailing list archive)
State	New, archived
Headers	show Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n4I9ONSI026513 for <patchwork-kvm@patchwork.kernel.org>; Mon, 18 May 2009 09:24:27 GMT From: Avi Kivity <avi@redhat.com> To: linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org Subject: [PATCH 20/43] KVM: APIC: kvm_apic_set_irq deliver all kinds of interrupts Date: Mon, 18 May 2009 12:22:42 +0300 Message-Id: <1242638585-18470-21-git-send-email-avi@redhat.com> In-Reply-To: <1242638585-18470-1-git-send-email-avi@redhat.com> References: <1242638585-18470-1-git-send-email-avi@redhat.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk

diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h index 4542651..5608488 100644 --- a/arch/ia64/include/asm/kvm_host.h +++ b/arch/ia64/include/asm/kvm_host.h @@ -585,7 +585,6 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu); int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); void kvm_sal_emul(struct kvm_vcpu *vcpu); -static inline void kvm_inject_nmi(struct kvm_vcpu *vcpu) {} #endif /* __ASSEMBLY__*/ #endif diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index 774f0d7..99d6d17 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -292,13 +292,13 @@ static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm, { switch (dm) { case SAPIC_FIXED: - kvm_apic_set_irq(vcpu, vector, 0); + kvm_apic_set_irq(vcpu, vector, dm, 0); break; case SAPIC_NMI: - kvm_apic_set_irq(vcpu, 2, 0); + kvm_apic_set_irq(vcpu, 2, dm, 0); break; case SAPIC_EXTINT: - kvm_apic_set_irq(vcpu, 0, 0); + kvm_apic_set_irq(vcpu, 0, dm, 0); break; case SAPIC_INIT: case SAPIC_PMI: @@ -1813,7 +1813,7 @@ void kvm_vcpu_kick(struct kvm_vcpu *vcpu) put_cpu(); } -int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig) +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 dmode, u8 trig) { struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h index 6d6cbcb..cbcfaa6 100644 --- a/arch/ia64/kvm/lapic.h +++ b/arch/ia64/kvm/lapic.h @@ -20,6 +20,6 @@ void kvm_free_lapic(struct kvm_vcpu *vcpu); int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest); int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda); -int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig); +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 dmode, u8 trig); #endif diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 27ca43e..a42f968 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -196,20 +196,30 @@ 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_vcpu *vcpu, u8 vec, u8 trig) +static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, + int vector, int level, int trig_mode); + +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 dmode, u8 trig) { struct kvm_lapic *apic = vcpu->arch.apic; + int lapic_dmode; - if (!apic_test_and_set_irr(vec, apic)) { - /* a new pending irq is set in IRR */ - if (trig) - apic_set_vector(vec, apic->regs + APIC_TMR); - else - apic_clear_vector(vec, apic->regs + APIC_TMR); - kvm_vcpu_kick(apic->vcpu); - return 1; + switch (dmode) { + case IOAPIC_LOWEST_PRIORITY: + lapic_dmode = APIC_DM_LOWEST; + break; + case IOAPIC_FIXED: + lapic_dmode = APIC_DM_FIXED; + break; + case IOAPIC_NMI: + lapic_dmode = APIC_DM_NMI; + break; + default: + printk(KERN_DEBUG"Ignoring delivery mode %d\n", dmode); + return 0; + break; } - return 0; + return __apic_accept_irq(apic, lapic_dmode, vec, 1, trig); } static inline int apic_find_highest_isr(struct kvm_lapic *apic) @@ -327,7 +337,7 @@ static int apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, int vector, int level, int trig_mode) { - int orig_irr, result = 0; + int result = 0; struct kvm_vcpu *vcpu = apic->vcpu; switch (delivery_mode) { @@ -337,10 +347,11 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, if (unlikely(!apic_enabled(apic))) break; - orig_irr = apic_test_and_set_irr(vector, apic); - if (orig_irr && trig_mode) { - apic_debug("level trig mode repeatedly for vector %d", - vector); + result = !apic_test_and_set_irr(vector, apic); + if (!result) { + if (trig_mode) + apic_debug("level trig mode repeatedly for " + "vector %d", vector); break; } @@ -349,10 +360,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, apic_set_vector(vector, apic->regs + APIC_TMR); } else apic_clear_vector(vector, apic->regs + APIC_TMR); - kvm_vcpu_kick(vcpu); - - result = (orig_irr == 0); break; case APIC_DM_REMRD: @@ -364,12 +372,14 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, break; case APIC_DM_NMI: + result = 1; kvm_inject_nmi(vcpu); kvm_vcpu_kick(vcpu); break; case APIC_DM_INIT: if (level) { + result = 1; if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE) printk(KERN_DEBUG "INIT on a runnable vcpu %d\n", @@ -386,6 +396,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, apic_debug("SIPI to vcpu %d vector 0x%02x\n", vcpu->vcpu_id, vector); if (vcpu->arch.mp_state == KVM_MP_STATE_INIT_RECEIVED) { + result = 1; vcpu->arch.sipi_vector = vector; vcpu->arch.mp_state = KVM_MP_STATE_SIPI_RECEIVED; kvm_vcpu_kick(vcpu); diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index 2fc0d3c..1b0e3c0 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -31,7 +31,7 @@ u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu); int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest); int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda); -int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig); +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 dmode, u8 trig); u64 kvm_get_apic_base(struct kvm_vcpu *vcpu); void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data); diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index ea268a8..d4a7948 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -142,25 +142,6 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val) } } -static int ioapic_inj_irq(struct kvm_ioapic *ioapic, - struct kvm_vcpu *vcpu, - u8 vector, u8 trig_mode, u8 delivery_mode) -{ - ioapic_debug("irq %d trig %d deliv %d\n", vector, trig_mode, - delivery_mode); - - ASSERT((delivery_mode == IOAPIC_FIXED) || - (delivery_mode == IOAPIC_LOWEST_PRIORITY)); - - return kvm_apic_set_irq(vcpu, vector, trig_mode); -} - -static void ioapic_inj_nmi(struct kvm_vcpu *vcpu) -{ - kvm_inject_nmi(vcpu); - kvm_vcpu_kick(vcpu); -} - static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq) { union kvm_ioapic_redirect_entry entry = ioapic->redirtbl[irq]; @@ -193,21 +174,12 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq) __clear_bit(vcpu_id, deliver_bitmask); vcpu = ioapic->kvm->vcpus[vcpu_id]; if (vcpu) { - if (entry.fields.delivery_mode == - IOAPIC_LOWEST_PRIORITY || - entry.fields.delivery_mode == IOAPIC_FIXED) { - if (r < 0) - r = 0; - r += ioapic_inj_irq(ioapic, vcpu, - entry.fields.vector, - entry.fields.trig_mode, - entry.fields.delivery_mode); - } else if (entry.fields.delivery_mode == IOAPIC_NMI) { - r = 1; - ioapic_inj_nmi(vcpu); - } else - ioapic_debug("unsupported delivery mode %x!\n", - entry.fields.delivery_mode); + if (r < 0) + r = 0; + r += kvm_apic_set_irq(vcpu, + entry.fields.vector, + entry.fields.trig_mode, + entry.fields.delivery_mode); } else ioapic_debug("null destination vcpu: " "mask=%x vector=%x delivery_mode=%x\n", diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index 1c6ff6d..325c668 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -148,6 +148,7 @@ static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, if (r < 0) r = 0; r += kvm_apic_set_irq(vcpu, entry.fields.vector, + entry.fields.dest_mode, entry.fields.trig_mode); } }

[20/43] KVM: APIC: kvm_apic_set_irq deliver all kinds of interrupts

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