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[PATCH v7 02/17] KVM: Add some helper functions for Posted-Interrupts

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This patch adds some helper functions to manipulate the
Posted-Interrupts Descriptor.

Signed-off-by: Feng Wu <feng.wu@intel.com>
---
 arch/x86/kvm/vmx.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 271dd70..316f9bf 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -443,6 +443,8 @@ struct nested_vmx {
 };
 
 #define POSTED_INTR_ON  0
+#define POSTED_INTR_SN  1
+
 /* Posted-Interrupt Descriptor */
 struct pi_desc {
 	u32 pir[8];     /* Posted interrupt requested */
@@ -483,6 +485,30 @@ static int pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
 	return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
 }
 
+static void pi_clear_sn(struct pi_desc *pi_desc)
+{
+	return clear_bit(POSTED_INTR_SN,
+			(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);
+}
+
 struct vcpu_vmx {
 	struct kvm_vcpu       vcpu;
 	unsigned long         host_rsp;
-- 
2.1.0

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Thread

[PATCH v7 00/17] Add VT-d Posted-Interrupts support Feng Wu <feng.wu@intel.com> - 2015-08-25 11:10 +0200
  [PATCH v7 02/17] KVM: Add some helper functions for Posted-Interrupts Feng Wu <feng.wu@intel.com> - 2015-08-25 11:10 +0200
  [PATCH v7 08/17] vfio: Select IRQ_BYPASS_MANAGER for vfio PCI devices Feng Wu <feng.wu@intel.com> - 2015-08-25 11:10 +0200
  [PATCH v7 11/17] KVM: Define two weak arch callbacks for irq bypass manager Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
  [PATCH v7 16/17] KVM: Warn if 'SN' is set during posting interrupts by software Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
  [PATCH v7 14/17] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
  [PATCH v7 15/17] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
  [PATCH v7 10/17] KVM: x86: Update IRTE for posted-interrupts Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
    Re: [PATCH v7 10/17] KVM: x86: Update IRTE for posted-interrupts Alex Williamson <alex.williamson@redhat.com> - 2015-08-25 22:00 +0200
      RE: [PATCH v7 10/17] KVM: x86: Update IRTE for posted-interrupts "Wu, Feng" <feng.wu@intel.com> - 2015-08-26 02:40 +0200
  [PATCH v7 12/17] KVM: Implement IRQ bypass consumer callbacks for x86 Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
  [PATCH v7 13/17] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd' Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
  [PATCH v7 17/17] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts Feng Wu <feng.wu@intel.com> - 2015-08-25 11:20 +0200
  [PATCH v7 07/17] KVM: make kvm_set_msi_irq() public Feng Wu <feng.wu@intel.com> - 2015-08-25 11:30 +0200
  [PATCH v7 09/17] vfio: Register/unregister irq_bypass_producer Feng Wu <feng.wu@intel.com> - 2015-08-25 11:30 +0200
  [PATCH v7 01/17] KVM: Extend struct pi_desc for VT-d Posted-Interrupts Feng Wu <feng.wu@intel.com> - 2015-08-25 11:30 +0200
  [PATCH v7 03/17] KVM: Define a new interface kvm_intr_is_single_vcpu() Feng Wu <feng.wu@intel.com> - 2015-08-25 11:30 +0200
  [PATCH v7 05/17] KVM: Add interfaces to control PI outside vmx Feng Wu <feng.wu@intel.com> - 2015-08-25 11:30 +0200
  [PATCH v7 06/17] KVM: Make struct kvm_irq_routing_table accessible Feng Wu <feng.wu@intel.com> - 2015-08-25 11:30 +0200

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