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-rw-r--r--target/i386/cpu.c7
-rw-r--r--target/i386/kvm.c9
2 files changed, 12 insertions, 4 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index d90c01a059..d6bb57d210 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1089,7 +1089,6 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
             .reg = R_EDX,
         },
         .tcg_features = TCG_7_0_EDX_FEATURES,
-        .unmigratable_flags = CPUID_7_0_EDX_ARCH_CAPABILITIES,
     },
     [FEAT_8000_0007_EDX] = {
         .type = CPUID_FEATURE_WORD,
@@ -2533,7 +2532,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_7_0_EBX_AVX512BW | CPUID_7_0_EBX_AVX512CD |
             CPUID_7_0_EBX_AVX512VL | CPUID_7_0_EBX_CLFLUSHOPT,
         .features[FEAT_7_0_ECX] =
-            CPUID_7_0_ECX_PKU | CPUID_7_0_ECX_OSPKE |
+            CPUID_7_0_ECX_PKU |
             CPUID_7_0_ECX_AVX512VNNI,
         .features[FEAT_7_0_EDX] =
             CPUID_7_0_EDX_SPEC_CTRL | CPUID_7_0_EDX_SPEC_CTRL_SSBD,
@@ -2586,7 +2585,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_7_0_EBX_SMAP,
         .features[FEAT_7_0_ECX] =
             CPUID_7_0_ECX_VBMI | CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_PKU |
-            CPUID_7_0_ECX_OSPKE | CPUID_7_0_ECX_VBMI2 | CPUID_7_0_ECX_GFNI |
+            CPUID_7_0_ECX_VBMI2 | CPUID_7_0_ECX_GFNI |
             CPUID_7_0_ECX_VAES | CPUID_7_0_ECX_VPCLMULQDQ |
             CPUID_7_0_ECX_AVX512VNNI | CPUID_7_0_ECX_AVX512BITALG |
             CPUID_7_0_ECX_AVX512_VPOPCNTDQ,
@@ -2644,7 +2643,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_7_0_EBX_AVX512VL | CPUID_7_0_EBX_CLFLUSHOPT,
         .features[FEAT_7_0_ECX] =
             CPUID_7_0_ECX_VBMI | CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_PKU |
-            CPUID_7_0_ECX_OSPKE | CPUID_7_0_ECX_VBMI2 | CPUID_7_0_ECX_GFNI |
+            CPUID_7_0_ECX_VBMI2 | CPUID_7_0_ECX_GFNI |
             CPUID_7_0_ECX_VAES | CPUID_7_0_ECX_VPCLMULQDQ |
             CPUID_7_0_ECX_AVX512VNNI | CPUID_7_0_ECX_AVX512BITALG |
             CPUID_7_0_ECX_AVX512_VPOPCNTDQ | CPUID_7_0_ECX_LA57,
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index beae1b99da..3b29ce5c0d 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -389,6 +389,15 @@ uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function,
         if (host_tsx_blacklisted()) {
             ret &= ~(CPUID_7_0_EBX_RTM | CPUID_7_0_EBX_HLE);
         }
+    } else if (function == 7 && index == 0 && reg == R_EDX) {
+        /*
+         * Linux v4.17-v4.20 incorrectly return ARCH_CAPABILITIES on SVM hosts.
+         * We can detect the bug by checking if MSR_IA32_ARCH_CAPABILITIES is
+         * returned by KVM_GET_MSR_INDEX_LIST.
+         */
+        if (!has_msr_arch_capabs) {
+            ret &= ~CPUID_7_0_EDX_ARCH_CAPABILITIES;
+        }
     } else if (function == 0x80000001 && reg == R_ECX) {
         /*
          * It's safe to enable TOPOEXT even if it's not returned by