linux-kernel - [PATCH 06/13] KVM: Add some helper functions for Posted-Interrupts

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Date:	Mon, 10 Nov 2014 14:26:45 +0800
From:	Feng Wu <feng.wu@...el.com>
To:	gleb@...nel.org, pbonzini@...hat.com, dwmw2@...radead.org,
	joro@...tes.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, x86@...nel.org
Cc:	kvm@...r.kernel.org, iommu@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, Feng Wu <feng.wu@...el.com>
Subject: [PATCH 06/13] KVM: Add some helper functions for Posted-Interrupts

This patch adds three helper functions to manipulate the Posted-
Interrtups Decriptor.

Signed-off-by: Feng Wu <feng.wu@...el.com>
---
 arch/x86/kvm/vmx.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index ae91b72..f41111f 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -435,6 +435,24 @@ static void pi_clear_sn(struct pi_desc *pi_desc)
 			(unsigned long *)&pi_desc->control);
 }
 
+static void pi_set_sn(struct pi_desc *pi_desc)
+{
+	return set_bit(POSTED_INTR_SN,
+			(unsigned long *)&pi_desc->control);
+}
+
+static int pi_test_on(struct pi_desc *pi_desc)
+{
+	return test_bit(POSTED_INTR_ON,
+			(unsigned long *)&pi_desc->control);
+}
+
+static int pi_test_sn(struct pi_desc *pi_desc)
+{
+	return test_bit(POSTED_INTR_SN,
+			(unsigned long *)&pi_desc->control);
+}
+
 static bool pi_test_and_set_on(struct pi_desc *pi_desc)
 {
 	return test_and_set_bit(POSTED_INTR_ON,
-- 
1.7.1

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