From ea12d023b247983b822e4e1e616831db17ecba9b Mon Sep 17 00:00:00 2001 From: Chen Qun Date: Tue, 22 Oct 2019 15:35:26 +0800 Subject: [PATCH] i386: Add MSR feature bit for MDS-NO Define MSR_ARCH_CAP_MDS_NO in the IA32_ARCH_CAPABILITIES MSR to allow CPU models to report the feature when host supports it. Signed-off-by: Cathy Zhang Reviewed-by: Xiaoyao Li Reviewed-by: Tao Xu Message-Id: <1571729728-23284-2-git-send-email-cathy.zhang@intel.com> Signed-off-by: Eduardo Habkost Signed-off-by: Jingyi Wang --- i386-Add-MSR-feature-bit-for-MDS-NO.patch | 34 +++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 i386-Add-MSR-feature-bit-for-MDS-NO.patch diff --git a/i386-Add-MSR-feature-bit-for-MDS-NO.patch b/i386-Add-MSR-feature-bit-for-MDS-NO.patch new file mode 100644 index 0000000..9a24836 --- /dev/null +++ b/i386-Add-MSR-feature-bit-for-MDS-NO.patch @@ -0,0 +1,34 @@ +From aaa6c86f46232c68f6846b2da859e4e0b8198664 Mon Sep 17 00:00:00 2001 +From: Cathy Zhang +Date: Tue, 22 Oct 2019 15:35:26 +0800 +Subject: [PATCH] i386: Add MSR feature bit for MDS-NO + +Define MSR_ARCH_CAP_MDS_NO in the IA32_ARCH_CAPABILITIES MSR to allow +CPU models to report the feature when host supports it. + +Signed-off-by: Cathy Zhang +Reviewed-by: Xiaoyao Li +Reviewed-by: Tao Xu +Message-Id: <1571729728-23284-2-git-send-email-cathy.zhang@intel.com> +Signed-off-by: Eduardo Habkost + +Signed-off-by: Jingyi Wang +--- + target/i386/cpu.h | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/target/i386/cpu.h b/target/i386/cpu.h +index 488b4dc778..9ef868eb71 100644 +--- a/target/i386/cpu.h ++++ b/target/i386/cpu.h +@@ -747,6 +747,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS]; + #define MSR_ARCH_CAP_RSBA (1U << 2) + #define MSR_ARCH_CAP_SKIP_L1DFL_VMENTRY (1U << 3) + #define MSR_ARCH_CAP_SSB_NO (1U << 4) ++#define MSR_ARCH_CAP_MDS_NO (1U << 5) + + #define MSR_CORE_CAP_SPLIT_LOCK_DETECT (1U << 5) + +-- +2.27.0 +