[PATCH v1 3/5] tools: Add KVM exit reason for the Idle HLT

[Manali Shukla <manali.shukla@amd.com>]

From: Manali Shukla <Manali.Shukla@amd.com>

The Idle HLT intercept feature allows for the HLT instruction execution
by a vCPU to be intercepted by hypervisor only if there are no pending
V_INR and V_NMI events for the vCPU. The Idle HLT intercept will not be
triggerred when vCPU is expected to service pending events (V_INTR and
V_NMI).

The new SVM_EXIT_IDLE_HLT is introduced as part of the Idle HLT
intercept feature. Add it to SVM_EXIT_REASONS, so that the
SVM_EXIT_IDLE_HLT type of VMEXIT is recognized by tools like perf etc.

Signed-off-by: Manali Shukla <Manali.Shukla@amd.com>
---
 tools/arch/x86/include/uapi/asm/svm.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/arch/x86/include/uapi/asm/svm.h b/tools/arch/x86/include/uapi/asm/svm.h
index 80e1df482337..5bf1ad15e1ee 100644
--- a/tools/arch/x86/include/uapi/asm/svm.h
+++ b/tools/arch/x86/include/uapi/asm/svm.h
@@ -95,6 +95,7 @@
 #define SVM_EXIT_CR14_WRITE_TRAP		0x09e
 #define SVM_EXIT_CR15_WRITE_TRAP		0x09f
 #define SVM_EXIT_INVPCID       0x0a2
+#define SVM_EXIT_IDLE_HLT      0x0a6
 #define SVM_EXIT_NPF           0x400
 #define SVM_EXIT_AVIC_INCOMPLETE_IPI		0x401
 #define SVM_EXIT_AVIC_UNACCELERATED_ACCESS	0x402
@@ -224,6 +225,7 @@
 	{ SVM_EXIT_CR8_WRITE_TRAP,	"write_cr8_trap" }, \
 	{ SVM_EXIT_INVPCID,     "invpcid" }, \
 	{ SVM_EXIT_NPF,         "npf" }, \
+	{ SVM_EXIT_IDLE_HLT,         "idle-halt" }, \
 	{ SVM_EXIT_AVIC_INCOMPLETE_IPI,		"avic_incomplete_ipi" }, \
 	{ SVM_EXIT_AVIC_UNACCELERATED_ACCESS,   "avic_unaccelerated_access" }, \
 	{ SVM_EXIT_VMGEXIT,		"vmgexit" }, \
-- 
2.34.1