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[Qemu-devel] [PATCH v4 2/5] i386: Add CPUID bit and feature words for IA
From: |
Robert Hoo |
Subject: |
[Qemu-devel] [PATCH v4 2/5] i386: Add CPUID bit and feature words for IA32_ARCH_CAPABILITIES MSR |
Date: |
Thu, 5 Jul 2018 17:09:55 +0800 |
Support of IA32_PRED_CMD MSR already be enumerated by same CPUID bit as
SPEC_CTRL.
At present, mark CPUID_7_0_EDX_ARCH_CAPABILITIES unmigratable, per Paolo's
comment.
Signed-off-by: Robert Hoo <address@hidden>
---
target/i386/cpu.c | 3 ++-
target/i386/cpu.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index b0b87c3..878b1ce 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1000,12 +1000,13 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS]
= {
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, "spec-ctrl", NULL,
- NULL, NULL, NULL, "ssbd",
+ NULL, "arch-capabilities", NULL, "ssbd",
},
.cpuid_eax = 7,
.cpuid_needs_ecx = true, .cpuid_ecx = 0,
.cpuid_reg = R_EDX,
.tcg_features = TCG_7_0_EDX_FEATURES,
+ .unmigratable_flags = CPUID_7_0_EDX_ARCH_CAPABILITIES,
},
[FEAT_8000_0007_EDX] = {
.feat_names = {
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index ae97005..c2b297b 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -690,6 +690,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS];
#define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2) /* AVX512 Neural Network
Instructions */
#define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3) /* AVX512 Multiply Accumulation
Single Precision */
#define CPUID_7_0_EDX_SPEC_CTRL (1U << 26) /* Speculation Control */
+#define CPUID_7_0_EDX_ARCH_CAPABILITIES (1U << 29) /*Arch Capabilities*/
#define CPUID_7_0_EDX_SPEC_CTRL_SSBD (1U << 31) /* Speculative Store Bypass
Disable */
#define CPUID_8000_0008_EBX_IBPB (1U << 12) /* Indirect Branch Prediction
Barrier */
--
1.8.3.1
- [Qemu-devel] [PATCH v4 0/5] Add Icelake CPU model, Robert Hoo, 2018/07/05
- [Qemu-devel] [PATCH v4 1/5] i386: Add new MSR indices for IA32_PRED_CMD and IA32_ARCH_CAPABILITIES, Robert Hoo, 2018/07/05
- [Qemu-devel] [PATCH v4 4/5] i386: Add CPUID bit for WBNOINVD, Robert Hoo, 2018/07/05
- [Qemu-devel] [PATCH v4 3/5] i386: Add CPUID bit for PCONFIG, Robert Hoo, 2018/07/05
- [Qemu-devel] [PATCH v4 2/5] i386: Add CPUID bit and feature words for IA32_ARCH_CAPABILITIES MSR,
Robert Hoo <=
- [Qemu-devel] [PATCH v4 5/5] i386: Add new CPU model Icelake-{Server, Client}, Robert Hoo, 2018/07/05
- Re: [Qemu-devel] [PATCH v4 0/5] Add Icelake CPU model, no-reply, 2018/07/05