From: Manali Shukla <manali.shukla@amd.com>
To: <kvm@vger.kernel.org>, <seanjc@google.com>
Cc: <linux-doc@vger.kernel.org>, <linux-perf-users@vger.kernel.org>,
<x86@kernel.org>, <pbonzini@redhat.com>, <peterz@infradead.org>,
<bp@alien8.de>, <santosh.shukla@amd.com>, <ravi.bangoria@amd.com>,
<thomas.lendacky@amd.com>, <nikunj@amd.com>,
<manali.shukla@amd.com>
Subject: [PATCH 05/13] KVM: x86/cpuid: Add a KVM-only leaf for IBS capabilities
Date: Mon, 4 Sep 2023 09:53:39 +0000 [thread overview]
Message-ID: <20230904095347.14994-6-manali.shukla@amd.com> (raw)
In-Reply-To: <20230904095347.14994-1-manali.shukla@amd.com>
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@amd.com>
---
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
next prev parent reply other threads:[~2023-09-04 9:54 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-04 9:53 [PATCH 00/13] Implement support for IBS virtualization Manali Shukla
2023-09-04 9:53 ` [PATCH 01/13] KVM: Add KVM_GET_LAPIC_W_EXTAPIC and KVM_SET_LAPIC_W_EXTAPIC for extapic Manali Shukla
2023-09-12 1:47 ` Chao Gao
2023-09-04 9:53 ` [PATCH 02/13] x86/cpufeatures: Add CPUID feature bit for Extended LVT Manali Shukla
2023-09-04 9:53 ` [PATCH 03/13] KVM: x86: Add emulation support for Extented LVT registers Manali Shukla
2023-09-12 2:36 ` Chao Gao
2023-09-04 9:53 ` [PATCH 04/13] x86/cpufeatures: Add CPUID feature bit for virtualized IBS Manali Shukla
2023-09-04 9:53 ` Manali Shukla [this message]
2023-09-04 9:53 ` [PATCH 06/13] KVM: x86: Extend CPUID range to include new leaf Manali Shukla
2023-09-12 2:46 ` Chao Gao
2023-09-04 9:53 ` [PATCH 07/13] KVM: SVM: Extend VMCB area for virtualized IBS registers Manali Shukla
2023-09-12 2:50 ` Chao Gao
2023-09-04 9:53 ` [PATCH 08/13] perf/x86/amd: Add framework to save/restore host IBS state Manali Shukla
2023-09-05 14:54 ` Tom Lendacky
2023-09-04 9:53 ` [PATCH 09/13] KVM: SVM: add support for IBS virtualization for non SEV-ES guests Manali Shukla
2023-09-05 15:30 ` Tom Lendacky
2023-09-06 1:51 ` Alexey Kardashevskiy
2023-09-12 3:09 ` Chao Gao
2023-09-04 9:53 ` [PATCH 10/13] x86/cpufeatures: Add CPUID feature bit for VIBS in SEV-ES guest Manali Shukla
2023-09-04 9:53 ` [PATCH 11/13] KVM: SVM: Add support for IBS virtualization for SEV-ES guests Manali Shukla
2023-09-05 15:43 ` Tom Lendacky
2023-09-04 9:53 ` [PATCH 12/13] KVM: SVM: Enable IBS virtualization on non SEV-ES and " Manali Shukla
2023-09-05 16:00 ` Tom Lendacky
2023-09-12 3:30 ` Chao Gao
2023-09-04 9:53 ` [PATCH 13/13] KVM: x86: nSVM: Implement support for nested IBS virtualization Manali Shukla
2023-09-05 15:47 ` [PATCH 00/13] Implement support for " Peter Zijlstra
2023-09-06 15:38 ` Manali Shukla
2023-09-06 19:56 ` Peter Zijlstra
2023-09-07 15:49 ` Manali Shukla
2023-09-08 13:31 ` Peter Zijlstra
2023-09-11 12:32 ` Manali Shukla
2023-09-28 11:18 ` Manali Shukla
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