Add a KVM-only leaf for AMD's Instruction Based Sampling capabilities.
There are 10 capabilities which are added to KVM-only leaf, so that KVM
can set these capabilities for the guest, when IBS feature bit is
enabled on the guest.
Signed-off-by: Manali Shukla <manali.shukla@xxxxxxx>
---
arch/x86/kvm/reverse_cpuid.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/x86/kvm/reverse_cpuid.h b/arch/x86/kvm/reverse_cpuid.h
index b81650678375..c6386c431fa6 100644
--- a/arch/x86/kvm/reverse_cpuid.h
+++ b/arch/x86/kvm/reverse_cpuid.h
@@ -15,6 +15,7 @@ enum kvm_only_cpuid_leafs {
CPUID_12_EAX = NCAPINTS,
CPUID_7_1_EDX,
CPUID_8000_0007_EDX,
+ CPUID_8000_001B_EAX,
CPUID_8000_0022_EAX,
NR_KVM_CPU_CAPS,
@@ -52,6 +53,19 @@ enum kvm_only_cpuid_leafs {
/* CPUID level 0x80000022 (EAX) */
#define KVM_X86_FEATURE_PERFMON_V2 KVM_X86_FEATURE(CPUID_8000_0022_EAX, 0)
+/* AMD defined Instruction-base Sampling capabilities. CPUID level 0x8000001B (EAX). */
+#define X86_FEATURE_IBS_AVAIL KVM_X86_FEATURE(CPUID_8000_001B_EAX, 0)
+#define X86_FEATURE_IBS_FETCHSAM KVM_X86_FEATURE(CPUID_8000_001B_EAX, 1)
+#define X86_FEATURE_IBS_OPSAM KVM_X86_FEATURE(CPUID_8000_001B_EAX, 2)
+#define X86_FEATURE_IBS_RDWROPCNT KVM_X86_FEATURE(CPUID_8000_001B_EAX, 3)
+#define X86_FEATURE_IBS_OPCNT KVM_X86_FEATURE(CPUID_8000_001B_EAX, 4)
+#define X86_FEATURE_IBS_BRNTRGT KVM_X86_FEATURE(CPUID_8000_001B_EAX, 5)
+#define X86_FEATURE_IBS_OPCNTEXT KVM_X86_FEATURE(CPUID_8000_001B_EAX, 6)
+#define X86_FEATURE_IBS_RIPINVALIDCHK KVM_X86_FEATURE(CPUID_8000_001B_EAX, 7)
+#define X86_FEATURE_IBS_OPBRNFUSE KVM_X86_FEATURE(CPUID_8000_001B_EAX, 8)
+#define X86_FEATURE_IBS_FETCHCTLEXTD KVM_X86_FEATURE(CPUID_8000_001B_EAX, 9)
+#define X86_FEATURE_IBS_ZEN4_EXT KVM_X86_FEATURE(CPUID_8000_001B_EAX, 11)
+
struct cpuid_reg {
u32 function;
u32 index;
@@ -80,6 +94,7 @@ static const struct cpuid_reg reverse_cpuid[] = {
[CPUID_8000_0007_EDX] = {0x80000007, 0, CPUID_EDX},
[CPUID_8000_0021_EAX] = {0x80000021, 0, CPUID_EAX},
[CPUID_8000_0022_EAX] = {0x80000022, 0, CPUID_EAX},
+ [CPUID_8000_001B_EAX] = {0x8000001b, 0, CPUID_EAX},
};
/*
--
2.34.1
