i386: Replace -noTSX, -IBRS, -IBPB CPU models with aliases

The old CPU models will be just aliases for specific versions of
the original CPU models.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20190628002844.24894-7-ehabkost@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

1 files changed, 21 insertions, 580 deletions

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 51beebdb27..f41917649d 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1439,6 +1439,7 @@ typedef struct PropValue {
 
 typedef struct X86CPUVersionDefinition {
     X86CPUVersion version;
+    const char *alias;
     PropValue *props;
 } X86CPUVersionDefinition;
 
@@ -1855,7 +1856,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to Nehalem-IBRS */
+                .alias = "Nehalem-IBRS",
                 .props = (PropValue[]) {
                     { "spec-ctrl", "on" },
                     { "model-id",
@@ -1867,36 +1868,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "Nehalem-IBRS",
-        .level = 11,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 26,
-        .stepping = 3,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_POPCNT | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
-            CPUID_EXT_CX16 | CPUID_EXT_SSSE3 | CPUID_EXT_SSE3,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_LAHF_LM,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core i7 9xx (Nehalem Core i7, IBRS update)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "Westmere",
         .level = 11,
         .vendor = CPUID_VENDOR_INTEL,
@@ -1925,7 +1896,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to Westmere-IBRS */
+                .alias = "Westmere-IBRS",
                 .props = (PropValue[]) {
                     { "spec-ctrl", "on" },
                     { "model-id",
@@ -1937,39 +1908,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "Westmere-IBRS",
-        .level = 11,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 44,
-        .stepping = 1,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AES | CPUID_EXT_POPCNT | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_LAHF_LM,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Westmere E56xx/L56xx/X56xx (IBRS update)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "SandyBridge",
         .level = 0xd,
         .vendor = CPUID_VENDOR_INTEL,
@@ -2003,7 +1941,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to SandyBridge-IBRS */
+                .alias = "SandyBridge-IBRS",
                 .props = (PropValue[]) {
                     { "spec-ctrl", "on" },
                     { "model-id",
@@ -2015,44 +1953,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "SandyBridge-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 42,
-        .stepping = 1,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_POPCNT |
-            CPUID_EXT_X2APIC | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
-            CPUID_EXT_CX16 | CPUID_EXT_SSSE3 | CPUID_EXT_PCLMULQDQ |
-            CPUID_EXT_SSE3,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_LAHF_LM,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Xeon E312xx (Sandy Bridge, IBRS update)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "IvyBridge",
         .level = 0xd,
         .vendor = CPUID_VENDOR_INTEL,
@@ -2089,7 +1989,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to IvyBridge-IBRS */
+                .alias = "IvyBridge-IBRS",
                 .props = (PropValue[]) {
                     { "spec-ctrl", "on" },
                     { "model-id",
@@ -2101,131 +2001,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "IvyBridge-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 58,
-        .stepping = 9,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_POPCNT |
-            CPUID_EXT_X2APIC | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
-            CPUID_EXT_CX16 | CPUID_EXT_SSSE3 | CPUID_EXT_PCLMULQDQ |
-            CPUID_EXT_SSE3 | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_ERMS,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_LAHF_LM,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Xeon E3-12xx v2 (Ivy Bridge, IBRS)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
-        .name = "Haswell-noTSX",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 60,
-        .stepping = 1,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core Processor (Haswell, no TSX)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
-        .name = "Haswell-noTSX-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 60,
-        .stepping = 1,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core Processor (Haswell, no TSX, IBRS)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "Haswell",
         .level = 0xd,
         .vendor = CPUID_VENDOR_INTEL,
@@ -2265,7 +2040,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to Haswell-noTSX */
+                .alias = "Haswell-noTSX",
                 .props = (PropValue[]) {
                     { "hle", "off" },
                     { "rtm", "off" },
@@ -2276,7 +2051,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             },
             {
                 .version = 3,
-                /* Equivalent to Haswell-IBRS */
+                .alias = "Haswell-IBRS",
                 .props = (PropValue[]) {
                     /* Restore TSX features removed by -v2 above */
                     { "hle", "on" },
@@ -2294,7 +2069,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             },
             {
                 .version = 4,
-                /* Equivalent to Haswell-noTSX-IBRS */
+                .alias = "Haswell-noTSX-IBRS",
                 .props = (PropValue[]) {
                     { "hle", "off" },
                     { "rtm", "off" },
@@ -2309,138 +2084,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "Haswell-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 60,
-        .stepping = 4,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
-            CPUID_7_0_EBX_RTM,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core Processor (Haswell, IBRS)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
-        .name = "Broadwell-noTSX",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 61,
-        .stepping = 2,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
-            CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
-            CPUID_7_0_EBX_SMAP,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core Processor (Broadwell, no TSX)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
-        .name = "Broadwell-noTSX-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 61,
-        .stepping = 2,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
-            CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
-            CPUID_7_0_EBX_SMAP,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core Processor (Broadwell, no TSX, IBRS)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "Broadwell",
         .level = 0xd,
         .vendor = CPUID_VENDOR_INTEL,
@@ -2481,7 +2124,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to Broadwell-noTSX */
+                .alias = "Broadwell-noTSX",
                 .props = (PropValue[]) {
                     { "hle", "off" },
                     { "rtm", "off" },
@@ -2491,7 +2134,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             },
             {
                 .version = 3,
-                /* Equivalent to Broadwell-IBRS */
+                .alias = "Broadwell-IBRS",
                 .props = (PropValue[]) {
                     /* Restore TSX features removed by -v2 above */
                     { "hle", "on" },
@@ -2504,7 +2147,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             },
             {
                 .version = 4,
-                /* Equivalent to Broadwell-noTSX-IBRS */
+                .alias = "Broadwell-noTSX-IBRS",
                 .props = (PropValue[]) {
                     { "hle", "off" },
                     { "rtm", "off" },
@@ -2518,51 +2161,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "Broadwell-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 61,
-        .stepping = 2,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
-            CPUID_7_0_EBX_RTM | CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
-            CPUID_7_0_EBX_SMAP,
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core Processor (Broadwell, IBRS)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "Skylake-Client",
         .level = 0xd,
         .vendor = CPUID_VENDOR_INTEL,
@@ -2610,7 +2208,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to Skylake-Client-IBRS */
+                .alias = "Skylake-Client-IBRS",
                 .props = (PropValue[]) {
                     { "spec-ctrl", "on" },
                     { "model-id",
@@ -2622,58 +2220,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "Skylake-Client-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 94,
-        .stepping = 3,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
-            CPUID_7_0_EBX_RTM | CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
-            CPUID_7_0_EBX_SMAP,
-        /* Missing: XSAVES (not supported by some Linux versions,
-         * including v4.1 to v4.12).
-         * KVM doesn't yet expose any XSAVES state save component,
-         * and the only one defined in Skylake (processor tracing)
-         * probably will block migration anyway.
-         */
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
-            CPUID_XSAVE_XGETBV1,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Core Processor (Skylake, IBRS)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "Skylake-Server",
         .level = 0xd,
         .vendor = CPUID_VENDOR_INTEL,
@@ -2726,7 +2272,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to Skylake-Server-IBRS */
+                .alias = "Skylake-Server-IBRS",
                 .props = (PropValue[]) {
                     /* clflushopt was not added to Skylake-Server-IBRS */
                     /* TODO: add -v3 including clflushopt */
@@ -2741,63 +2287,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "Skylake-Server-IBRS",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_INTEL,
-        .family = 6,
-        .model = 85,
-        .stepping = 4,
-        .features[FEAT_1_EDX] =
-            CPUID_VME | CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
-            CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
-            CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
-            CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
-            CPUID_DE | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
-            CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
-            CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
-            CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
-            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
-            CPUID_EXT_PCID | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP |
-            CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
-        .features[FEAT_7_0_EDX] =
-            CPUID_7_0_EDX_SPEC_CTRL,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
-            CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
-            CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
-            CPUID_7_0_EBX_RTM | CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
-            CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_CLWB |
-            CPUID_7_0_EBX_AVX512F | CPUID_7_0_EBX_AVX512DQ |
-            CPUID_7_0_EBX_AVX512BW | CPUID_7_0_EBX_AVX512CD |
-            CPUID_7_0_EBX_AVX512VL,
-        .features[FEAT_7_0_ECX] =
-            CPUID_7_0_ECX_PKU,
-        /* Missing: XSAVES (not supported by some Linux versions,
-         * including v4.1 to v4.12).
-         * KVM doesn't yet expose any XSAVES state save component,
-         * and the only one defined in Skylake (processor tracing)
-         * probably will block migration anyway.
-         */
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
-            CPUID_XSAVE_XGETBV1,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .xlevel = 0x80000008,
-        .model_id = "Intel Xeon Processor (Skylake, IBRS)",
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "Cascadelake-Server",
         .level = 0xd,
         .vendor = CPUID_VENDOR_INTEL,
@@ -3258,7 +2747,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             { .version = 1 },
             {
                 .version = 2,
-                /* Equivalent to EPYC-IBPB */
+                .alias = "EPYC-IBPB",
                 .props = (PropValue[]) {
                     { "ibpb", "on" },
                     { "model-id",
@@ -3270,61 +2759,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
         }
     },
     {
-        .name = "EPYC-IBPB",
-        .level = 0xd,
-        .vendor = CPUID_VENDOR_AMD,
-        .family = 23,
-        .model = 1,
-        .stepping = 2,
-        .features[FEAT_1_EDX] =
-            CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX | CPUID_CLFLUSH |
-            CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA | CPUID_PGE |
-            CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 | CPUID_MCE |
-            CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE | CPUID_DE |
-            CPUID_VME | CPUID_FP87,
-        .features[FEAT_1_ECX] =
-            CPUID_EXT_RDRAND | CPUID_EXT_F16C | CPUID_EXT_AVX |
-            CPUID_EXT_XSAVE | CPUID_EXT_AES |  CPUID_EXT_POPCNT |
-            CPUID_EXT_MOVBE | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
-            CPUID_EXT_CX16 | CPUID_EXT_FMA | CPUID_EXT_SSSE3 |
-            CPUID_EXT_MONITOR | CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3,
-        .features[FEAT_8000_0001_EDX] =
-            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_PDPE1GB |
-            CPUID_EXT2_FFXSR | CPUID_EXT2_MMXEXT | CPUID_EXT2_NX |
-            CPUID_EXT2_SYSCALL,
-        .features[FEAT_8000_0001_ECX] =
-            CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
-            CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
-            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
-            CPUID_EXT3_TOPOEXT,
-        .features[FEAT_8000_0008_EBX] =
-            CPUID_8000_0008_EBX_IBPB,
-        .features[FEAT_7_0_EBX] =
-            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AVX2 |
-            CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED |
-            CPUID_7_0_EBX_ADX | CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_CLFLUSHOPT |
-            CPUID_7_0_EBX_SHA_NI,
-        /* Missing: XSAVES (not supported by some Linux versions,
-         * including v4.1 to v4.12).
-         * KVM doesn't yet expose any XSAVES state save component.
-         */
-        .features[FEAT_XSAVE] =
-            CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
-            CPUID_XSAVE_XGETBV1,
-        .features[FEAT_6_EAX] =
-            CPUID_6_EAX_ARAT,
-        .features[FEAT_SVM] =
-            CPUID_SVM_NPT | CPUID_SVM_NRIPSAVE,
-        .xlevel = 0x8000001E,
-        .model_id = "AMD EPYC Processor (with IBPB)",
-        .cache_info = &epyc_cache_info,
-        /*
-         * This CPU model will eventually be replaced by an alias,
-         * don't register any versions for it.
-         */
-        .versions = (X86CPUVersionDefinition[]) { { /* end of list */ } },
-    },
-    {
         .name = "Dhyana",
         .level = 0xd,
         .vendor = CPUID_VENDOR_HYGON,
@@ -4648,6 +4082,13 @@ static void x86_register_cpudef_types(X86CPUDefinition *def)
         name = x86_cpu_versioned_model_name(def, vdef->version);
         x86_register_cpu_model_type(name, m);
         g_free(name);
+
+        if (vdef->alias) {
+            X86CPUModel *am = g_new0(X86CPUModel, 1);
+            am->cpudef = def;
+            am->version = vdef->version;
+            x86_register_cpu_model_type(vdef->alias, am);
+        }
     }
 
 }