linux-kernel - [PATCH 11/40] KVM: Add a pending interrupt queue

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Message-Id: <1222177614-26669-12-git-send-email-avi@redhat.com>
Date:	Tue, 23 Sep 2008 16:46:25 +0300
From:	Avi Kivity <avi@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	kvm@...r.kernel.org, Avi Kivity <avi@...ranet.com>
Subject: [PATCH 11/40] KVM: Add a pending interrupt queue

From: Avi Kivity <avi@...ranet.com>

Similar to the exception queue, this hold interrupts that have been
accepted by the virtual processor core but not yet injected.

Not yet used.

Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 arch/x86/kvm/x86.h         |   11 +++++++++++
 include/asm-x86/kvm_host.h |    5 +++++
 2 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index c666649..6a4be78 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -8,4 +8,15 @@ static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
 	vcpu->arch.exception.pending = false;
 }
 
+static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector)
+{
+	vcpu->arch.interrupt.pending = true;
+	vcpu->arch.interrupt.nr = vector;
+}
+
+static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
+{
+	vcpu->arch.interrupt.pending = false;
+}
+
 #endif
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index 501d215..af1c0f7 100644
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -275,6 +275,11 @@ struct kvm_vcpu_arch {
 		u32 error_code;
 	} exception;
 
+	struct kvm_queued_interrupt {
+		bool pending;
+		u8 nr;
+	} interrupt;
+
 	struct {
 		int active;
 		u8 save_iopl;
-- 
1.6.0.1

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