| From a10f2cff4a418edae4f3040c4bf09e5aad80316a Mon Sep 17 00:00:00 2001 |
| From: "plai@redhat.com" <plai@redhat.com> |
| Date: Mon, 20 May 2019 20:05:56 +0100 |
| Subject: [PATCH 1/5] x86/cpu: Enable CLDEMOTE(Demote Cache Line) cpu feature |
| |
| RH-Author: plai@redhat.com |
| Message-id: <1554409731-21082-1-git-send-email-plai@redhat.com> |
| Patchwork-id: 85447 |
| O-Subject: [RHEL8.1 qemu-kvm PATCH] x86/cpu: Enable CLDEMOTE(Demote Cache Line) cpu feature |
| Bugzilla: 1696436 |
| RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com> |
| RH-Acked-by: John Snow <jsnow@redhat.com> |
| RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com> |
| |
| From: Jingqi Liu <jingqi.liu@intel.com> |
| |
| BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1696436 |
| Brew: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=20946375 |
| Branch: rhel-8.1.0 |
| |
| Tested by Intel QA on SNR (simics) |
| |
| Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com> |
| |
| target/i386/cpu.c | 2 +- |
| target/i386/cpu.h | 1 + |
| 2 files changed, 2 insertions(+), 1 deletion(-) |
| |
| diff --git a/target/i386/cpu.c b/target/i386/cpu.c |
| index 8ff6c38..77be7e8 100644 |
| |
| |
| @@ -1025,7 +1025,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { |
| "avx512bitalg", NULL, "avx512-vpopcntdq", NULL, |
| "la57", NULL, NULL, NULL, |
| NULL, NULL, "rdpid", NULL, |
| - NULL, NULL, NULL, NULL, |
| + NULL, "cldemote", NULL, NULL, |
| NULL, NULL, NULL, NULL, |
| }, |
| .cpuid = { |
| diff --git a/target/i386/cpu.h b/target/i386/cpu.h |
| index 3ae0e8c..4f9df6e 100644 |
| |
| |
| @@ -684,6 +684,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS]; |
| #define CPUID_7_0_ECX_AVX512_VPOPCNTDQ (1U << 14) /* POPCNT for vectors of DW/QW */ |
| #define CPUID_7_0_ECX_LA57 (1U << 16) |
| #define CPUID_7_0_ECX_RDPID (1U << 22) |
| +#define CPUID_7_0_ECX_CLDEMOTE (1U << 25) /* CLDEMOTE Instruction */ |
| |
| #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 */ |
| -- |
| 1.8.3.1 |
| |