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Subject[PATCH 03/13] KVM: Add KVM_CAP_PI to detect VT-d Posted-Interrtups
Date
This patch adds KVM_CAP_PI to detect VT-d Posted-Interrtups
feature for QEMU.

Signed-off-by: Feng Wu <feng.wu@intel.com>
---
arch/x86/kvm/x86.c | 4 ++++
include/uapi/linux/kvm.h | 1 +
2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0033df3..b447a98 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -63,6 +63,7 @@
#include <asm/xcr.h>
#include <asm/pvclock.h>
#include <asm/div64.h>
+#include <asm/irq_remapping.h>

#define MAX_IO_MSRS 256
#define KVM_MAX_MCE_BANKS 32
@@ -2775,6 +2776,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_TSC_DEADLINE_TIMER:
r = boot_cpu_has(X86_FEATURE_TSC_DEADLINE_TIMER);
break;
+ case KVM_CAP_PI:
+ r = irq_post_enabled;
+ break;
default:
r = 0;
break;
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 6076882..7593c52 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -761,6 +761,7 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_PPC_FIXUP_HCALL 103
#define KVM_CAP_PPC_ENABLE_HCALL 104
#define KVM_CAP_CHECK_EXTENSION_VM 105
+#define KVM_CAP_PI 106

#ifdef KVM_CAP_IRQ_ROUTING

--
1.7.1


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