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i386: Add MSR feature bit for MDS-NO

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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 <cathy.zhang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <1571729728-23284-2-git-send-email-cathy.zhang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

Signed-off-by: Jingyi Wang <wangjingyi11@huawei.com>
This commit is contained in:
Chen Qun 2019-10-22 15:35:26 +08:00
parent 5c53cc20b8
commit b0d43e51f0
1 changed files with 34 additions and 0 deletions
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i386-Add-MSR-feature-bit-for-MDS-NO.patch Normal file
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@ -0,0 +1,34 @@
From 986fcd107eb251d11bae70a2777f950f06fdafa4 Mon Sep 17 00:00:00 2001
From: Cathy Zhang <cathy.zhang@intel.com>
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 <cathy.zhang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <1571729728-23284-2-git-send-email-cathy.zhang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Jingyi Wang <wangjingyi11@huawei.com>
---
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