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[PATCH 1/6] target/i386: Add support for CMPCCXADD in CPUID enumeration
From: |
Jiaxi Chen |
Subject: |
[PATCH 1/6] target/i386: Add support for CMPCCXADD in CPUID enumeration |
Date: |
Thu, 8 Dec 2022 15:19:12 +0800 |
CMPccXADD is a new set of instructions in the latest Intel platform
Sierra Forest. This new instruction set includes a semaphore operation
that can compare and add the operands if condition is met, which can
improve database performance.
The bit definition:
CPUID.(EAX=7,ECX=1):EAX[bit 7]
Add CPUID definition for CMPCCXADD.
Signed-off-by: Jiaxi Chen <jiaxi.chen@linux.intel.com>
---
target/i386/cpu.c | 2 +-
target/i386/cpu.h | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 22b681ca37..a61f936eef 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -871,7 +871,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL, NULL, NULL, NULL,
- "avx-vnni", "avx512-bf16", NULL, NULL,
+ "avx-vnni", "avx512-bf16", NULL, "cmpccxadd",
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index d4bc19577a..3391b99456 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -900,6 +900,9 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWord w,
#define CPUID_7_1_EAX_AVX_VNNI (1U << 4)
/* AVX512 BFloat16 Instruction */
#define CPUID_7_1_EAX_AVX512_BF16 (1U << 5)
+/* CMPCCXADD Instructions */
+#define CPUID_7_1_EAX_CMPCCXADD (1U << 7)
+
/* XFD Extend Feature Disabled */
#define CPUID_D_1_EAX_XFD (1U << 4)
--
2.27.0
- [PATCH 0/6] target/i386: Support new Intel platform Instructions in CPUID enumeration, Jiaxi Chen, 2022/12/08
- [PATCH 2/6] target/i386: Add support for AMX-FP16 in CPUID enumeration, Jiaxi Chen, 2022/12/08
- [PATCH 3/6] target/i386: Add support for AVX-IFMA in CPUID enumeration, Jiaxi Chen, 2022/12/08
- [PATCH 1/6] target/i386: Add support for CMPCCXADD in CPUID enumeration,
Jiaxi Chen <=
- [PATCH 5/6] target/i386: Add support for AVX-NE-CONVERT in CPUID enumeration, Jiaxi Chen, 2022/12/08
- [PATCH 4/6] target/i386: Add support for AVX-VNNI-INT8 in CPUID enumeration, Jiaxi Chen, 2022/12/08
- [PATCH 6/6] target/i386: Add support for PREFETCHIT0/1 in CPUID enumeration, Jiaxi Chen, 2022/12/08