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From: Yang Zhang <yang.z.zhang@intel.com>
To: kvm@vger.kernel.org
Cc: gleb@redhat.com, mtosatti@redhat.com, xiantao.zhang@intel.com,
	jun.nakajima@intel.com, Yang Zhang <yang.z.zhang@Intel.com>
Subject: [PATCH v9 7/7] KVM: VMX: Use posted interrupt to deliver virtual interrupt
Date: Wed, 10 Apr 2013 21:22:57 +0800	[thread overview]
Message-ID: <1365600177-8506-8-git-send-email-yang.z.zhang@intel.com> (raw)
In-Reply-To: <1365600177-8506-1-git-send-email-yang.z.zhang@intel.com>

From: Yang Zhang <yang.z.zhang@Intel.com>

If posted interrupt is avaliable, then uses it to inject virtual
interrupt to guest.

Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
---
 arch/x86/kvm/lapic.c |   32 +++++++++++++++++++++-----------
 arch/x86/kvm/vmx.c   |    2 +-
 arch/x86/kvm/x86.c   |    1 +
 3 files changed, 23 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 42a87ac..4fdb984 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -349,6 +349,7 @@ static inline int apic_find_highest_irr(struct kvm_lapic *apic)
 	if (!apic->irr_pending)
 		return -1;
 
+	kvm_x86_ops->sync_pir_to_irr(apic->vcpu);
 	result = apic_search_irr(apic);
 	ASSERT(result == -1 || result >= 16);
 
@@ -679,18 +680,27 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
 		if (dest_map)
 			__set_bit(vcpu->vcpu_id, dest_map);
 
-		result = !apic_test_and_set_irr(vector, apic);
-		trace_kvm_apic_accept_irq(vcpu->vcpu_id, delivery_mode,
-					  trig_mode, vector, !result);
-		if (!result) {
-			if (trig_mode)
-				apic_debug("level trig mode repeatedly for "
-						"vector %d", vector);
-			break;
-		}
+		if (kvm_x86_ops->deliver_posted_interrupt) {
+			result = 1;
+			kvm_x86_ops->deliver_posted_interrupt(vcpu, vector);
+		} else {
+			result = !apic_test_and_set_irr(vector, apic);
+
+			trace_kvm_apic_accept_irq(vcpu->vcpu_id, delivery_mode,
+					trig_mode, vector, !result);
+			if (!result) {
+				if (trig_mode)
+					apic_debug("level trig mode repeatedly "
+						"for vector %d", vector);
+				goto out;
+			}
 
-		kvm_make_request(KVM_REQ_EVENT, vcpu);
-		kvm_vcpu_kick(vcpu);
+			kvm_make_request(KVM_REQ_EVENT, vcpu);
+			kvm_vcpu_kick(vcpu);
+		}
+out:
+		trace_kvm_apic_accept_irq(vcpu->vcpu_id, delivery_mode,
+				trig_mode, vector, !result);
 		break;
 
 	case APIC_DM_REMRD:
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 314b2ed..52b21da 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -84,7 +84,7 @@ module_param(vmm_exclusive, bool, S_IRUGO);
 static bool __read_mostly fasteoi = 1;
 module_param(fasteoi, bool, S_IRUGO);
 
-static bool __read_mostly enable_apicv;
+static bool __read_mostly enable_apicv = 1;
 module_param(enable_apicv, bool, S_IRUGO);
 
 /*
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 72be079..486f627 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2685,6 +2685,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
 static int kvm_vcpu_ioctl_get_lapic(struct kvm_vcpu *vcpu,
 				    struct kvm_lapic_state *s)
 {
+	kvm_x86_ops->sync_pir_to_irr(vcpu);
 	memcpy(s->regs, vcpu->arch.apic->regs, sizeof *s);
 
 	return 0;
-- 
1.7.1


  parent reply	other threads:[~2013-04-10 13:27 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-10 13:22 [PATCH v9 0/7] KVM: VMX: Add Posted Interrupt supporting Yang Zhang
2013-04-10 13:22 ` [PATCH v9 1/7] KVM: VMX: Enable acknowledge interupt on vmexit Yang Zhang
2013-04-10 13:22 ` [PATCH v9 2/7] KVM: VMX: Register a new IPI for posted interrupt Yang Zhang
2013-04-10 13:22 ` [PATCH v9 3/7] KVM: VMX: Check the posted interrupt capability Yang Zhang
2013-04-10 13:22 ` [PATCH v9 4/7] KVM: Call common update function when ioapic entry changed Yang Zhang
2013-04-10 13:22 ` [PATCH v9 5/7] KVM: Set TMR when programming ioapic entry Yang Zhang
2013-04-10 13:22 ` [PATCH v9 6/7] KVM: VMX: Add the algorithm of deliver posted interrupt Yang Zhang
2013-04-10 13:22 ` Yang Zhang [this message]
2013-04-10 15:32   ` [PATCH v9 7/7] KVM: VMX: Use posted interrupt to deliver virtual interrupt Gleb Natapov
2013-04-11  0:56     ` Zhang, Yang Z
2013-04-10 15:33 ` [PATCH v9 0/7] KVM: VMX: Add Posted Interrupt supporting Gleb Natapov
2013-04-11  1:03   ` Zhang, Yang Z
2013-04-11  5:44     ` Gleb Natapov
2013-04-11  6:05       ` Zhang, Yang Z

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