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DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Dec 2022 19:47:13.9838 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 988a6386-6c7b-4d8f-e5b3-08dad49e02ab X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000B8E8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB6269 Received-SPF: softfail client-ip=2a01:111:f400:7ea9::61f; envelope-from=Babu.Moger@amd.com; helo=NAM02-SN1-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1670010489354100002 From: Michael Roth New EPYC CPUs versions require small changes to their cache_info's. Because current QEMU x86 CPU definition does not support cache versions, we would have to declare a new CPU type for each such case. To avoid this duplication, the patch allows new cache_info pointers to be specified for a new CPU version. Co-developed-by: Wei Huang Signed-off-by: Wei Huang Signed-off-by: Michael Roth Signed-off-by: Babu Moger --- target/i386/cpu.c | 36 +++++++++++++++++++++++++++++++++--- 1 file changed, 33 insertions(+), 3 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 22b681ca37..b0f1d4618e 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1596,6 +1596,7 @@ typedef struct X86CPUVersionDefinition { const char *alias; const char *note; PropValue *props; + const CPUCaches *const cache_info; } X86CPUVersionDefinition; =20 /* Base definition for a CPU model */ @@ -5058,6 +5059,32 @@ static void x86_cpu_apply_version_props(X86CPU *cpu,= X86CPUModel *model) assert(vdef->version =3D=3D version); } =20 +/* Apply properties for the CPU model version specified in model */ +static const CPUCaches *x86_cpu_get_version_cache_info(X86CPU *cpu, + X86CPUModel *model) +{ + const X86CPUVersionDefinition *vdef; + X86CPUVersion version =3D x86_cpu_model_resolve_version(model); + const CPUCaches *cache_info =3D model->cpudef->cache_info; + + if (version =3D=3D CPU_VERSION_LEGACY) { + return cache_info; + } + + for (vdef =3D x86_cpu_def_get_versions(model->cpudef); vdef->version; = vdef++) { + if (vdef->cache_info) { + cache_info =3D vdef->cache_info; + } + + if (vdef->version =3D=3D version) { + break; + } + } + + assert(vdef->version =3D=3D version); + return cache_info; +} + /* * Load data from X86CPUDefinition into a X86CPU object. * Only for builtin_x86_defs models initialized with x86_register_cpudef_t= ypes. @@ -5090,7 +5117,7 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUMod= el *model) } =20 /* legacy-cache defaults to 'off' if CPU model provides cache info */ - cpu->legacy_cache =3D !def->cache_info; + cpu->legacy_cache =3D !x86_cpu_get_version_cache_info(cpu, model); =20 env->features[FEAT_1_ECX] |=3D CPUID_EXT_HYPERVISOR; =20 @@ -6562,14 +6589,17 @@ static void x86_cpu_realizefn(DeviceState *dev, Err= or **errp) =20 /* Cache information initialization */ if (!cpu->legacy_cache) { - if (!xcc->model || !xcc->model->cpudef->cache_info) { + const CPUCaches *cache_info =3D + x86_cpu_get_version_cache_info(cpu, xcc->model); + + if (!xcc->model || !cache_info) { g_autofree char *name =3D x86_cpu_class_get_model_name(xcc); error_setg(errp, "CPU model '%s' doesn't support legacy-cache=3Doff"= , name); return; } env->cache_info_cpuid2 =3D env->cache_info_cpuid4 =3D env->cache_i= nfo_amd =3D - *xcc->model->cpudef->cache_info; + *cache_info; } else { /* Build legacy cache information */ env->cache_info_cpuid2.l1d_cache =3D &legacy_l1d_cache; From nobody Tue Apr 30 01:33:55 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=amd.com); dmarc=pass(p=quarantine dis=none) header.from=amd.com ARC-Seal: i=2; a=rsa-sha256; t=1670010488; cv=pass; d=zohomail.com; s=zohoarc; b=gZLBQSCmpiZ3b8W+jQyWECEQgB0WDvvywKr/81W+8b9UdF4HZm3aQ9DMMRlrlhGpEBQWHaIiIyZ9s+6fLhPnMbf6l1+9+jqtpO/v7KEHF5/2PZV+prP6cGgflUZ46/T5SPHlPKCGIwbkkUq5z6Oj/jirzO7Y/WZZ2v7mvdvBL7E= ARC-Message-Signature: i=2; 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Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000B8EF.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6349 Received-SPF: softfail client-ip=2a01:111:f400:fe5b::62e; envelope-from=Babu.Moger@amd.com; helo=NAM12-BN8-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1670010489343100001 From: Michael Roth Introduce new EPYC cpu versions: EPYC-v4 and EPYC-Rome-v3. The only difference vs. older models is an updated cache_info with the 'complex_indexing' bit unset, since this bit is not currently defined for AMD and may cause problems should it be used for something else in the future. Setting this bit will also cause CPUID validation failures when running SEV-SNP guests. Signed-off-by: Michael Roth Signed-off-by: Babu Moger --- target/i386/cpu.c | 118 +++++++++++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 118 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index b0f1d4618e..81918e10ba 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1705,6 +1705,56 @@ static const CPUCaches epyc_cache_info =3D { }, }; =20 +static CPUCaches epyc_v4_cache_info =3D { + .l1d_cache =3D &(CPUCacheInfo) { + .type =3D DATA_CACHE, + .level =3D 1, + .size =3D 32 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 64, + .lines_per_tag =3D 1, + .self_init =3D 1, + .no_invd_sharing =3D true, + }, + .l1i_cache =3D &(CPUCacheInfo) { + .type =3D INSTRUCTION_CACHE, + .level =3D 1, + .size =3D 64 * KiB, + .line_size =3D 64, + .associativity =3D 4, + .partitions =3D 1, + .sets =3D 256, + .lines_per_tag =3D 1, + .self_init =3D 1, + .no_invd_sharing =3D true, + }, + .l2_cache =3D &(CPUCacheInfo) { + .type =3D UNIFIED_CACHE, + .level =3D 2, + .size =3D 512 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 1024, + .lines_per_tag =3D 1, + }, + .l3_cache =3D &(CPUCacheInfo) { + .type =3D UNIFIED_CACHE, + .level =3D 3, + .size =3D 8 * MiB, + .line_size =3D 64, + .associativity =3D 16, + .partitions =3D 1, + .sets =3D 8192, + .lines_per_tag =3D 1, + .self_init =3D true, + .inclusive =3D true, + .complex_indexing =3D false, + }, +}; + static const CPUCaches epyc_rome_cache_info =3D { .l1d_cache =3D &(CPUCacheInfo) { .type =3D DATA_CACHE, @@ -1755,6 +1805,56 @@ static const CPUCaches epyc_rome_cache_info =3D { }, }; =20 +static const CPUCaches epyc_rome_v3_cache_info =3D { + .l1d_cache =3D &(CPUCacheInfo) { + .type =3D DATA_CACHE, + .level =3D 1, + .size =3D 32 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 64, + .lines_per_tag =3D 1, + .self_init =3D 1, + .no_invd_sharing =3D true, + }, + .l1i_cache =3D &(CPUCacheInfo) { + .type =3D INSTRUCTION_CACHE, + .level =3D 1, + .size =3D 32 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 64, + .lines_per_tag =3D 1, + .self_init =3D 1, + .no_invd_sharing =3D true, + }, + .l2_cache =3D &(CPUCacheInfo) { + .type =3D UNIFIED_CACHE, + .level =3D 2, + .size =3D 512 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 1024, + .lines_per_tag =3D 1, + }, + .l3_cache =3D &(CPUCacheInfo) { + .type =3D UNIFIED_CACHE, + .level =3D 3, + .size =3D 16 * MiB, + .line_size =3D 64, + .associativity =3D 16, + .partitions =3D 1, + .sets =3D 16384, + .lines_per_tag =3D 1, + .self_init =3D true, + .inclusive =3D true, + .complex_indexing =3D false, + }, +}; + static const CPUCaches epyc_milan_cache_info =3D { .l1d_cache =3D &(CPUCacheInfo) { .type =3D DATA_CACHE, @@ -3960,6 +4060,15 @@ static const X86CPUDefinition builtin_x86_defs[] =3D= { { /* end of list */ } } }, + { + .version =3D 4, + .props =3D (PropValue[]) { + { "model-id", + "AMD EPYC-v4 Processor" }, + { /* end of list */ } + }, + .cache_info =3D &epyc_v4_cache_info + }, { /* end of list */ } } }, @@ -4079,6 +4188,15 @@ static const X86CPUDefinition builtin_x86_defs[] =3D= { { /* end of list */ } } }, + { + .version =3D 3, + .props =3D (PropValue[]) { + { "model-id", + "AMD EPYC-Rome-v3 Processor" }, + { /* end of list */ } + }, + .cache_info =3D &epyc_rome_v3_cache_info + }, { /* end of list */ } } }, From nobody Tue Apr 30 01:33:55 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=amd.com); 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Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000B8EA.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7163 Received-SPF: softfail client-ip=2a01:111:f400:7e83::60b; envelope-from=Babu.Moger@amd.com; helo=NAM02-DM3-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1670010525205100003 Add the following feature bits. amd-psfd : Predictive Store Forwarding Disable: PSF is a hardware-based micro-architectural optimization designed to improve the performance of code execution by predicting address dependencies between loads and stores. While SSBD (Speculative Store Bypass Disable) disables both PSF and speculative store bypass, PSFD only disables PSF. PSFD may be desirable for the software which is concerned with the speculative behavior of PSF but desires a smaller performance impact than setting SSBD. Depends on the following kernel commit: b73a54321ad8 ("KVM: x86: Expose Predictive Store Forwarding Disa= ble") stibp-always-on : Single Thread Indirect Branch Prediction mode has enhanced performance and may be left always on. The documentation for the features are available in the links below. a. Processor Programming Reference (PPR) for AMD Family 19h Model 01h, Revision B1 Processors b. SECURITY ANALYSIS OF AMD PREDICTIVE STORE FORWARDING Link: https://www.amd.com/system/files/documents/security-analysis-predicti= ve-store-forwarding.pdf Link: https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip Signed-off-by: Babu Moger --- target/i386/cpu.c | 4 ++-- target/i386/cpu.h | 4 ++++ 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 81918e10ba..b20e422b2e 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -909,10 +909,10 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] =3D { NULL, NULL, NULL, NULL, NULL, "wbnoinvd", NULL, NULL, "ibpb", NULL, "ibrs", "amd-stibp", - NULL, NULL, NULL, NULL, + NULL, "stibp-always-on", NULL, NULL, NULL, NULL, NULL, NULL, "amd-ssbd", "virt-ssbd", "amd-no-ssb", NULL, - NULL, NULL, NULL, NULL, + "amd-psfd", NULL, NULL, NULL, }, .cpuid =3D { .eax =3D 0x80000008, .reg =3D R_EBX, }, .tcg_features =3D 0, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index d4bc19577a..8c65c92131 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -918,8 +918,12 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWor= d w, #define CPUID_8000_0008_EBX_IBRS (1U << 14) /* Single Thread Indirect Branch Predictors */ #define CPUID_8000_0008_EBX_STIBP (1U << 15) +/* STIBP mode has enhanced performance and may be left always on */ +#define CPUID_8000_0008_EBX_STIBP_ALWAYS_ON (1U << 17) /* Speculative Store Bypass Disable */ #define CPUID_8000_0008_EBX_AMD_SSBD (1U << 24) +/* Predictive Store Forwarding Disable */ +#define CPUID_8000_0008_EBX_AMD_PSFD (1U << 28) =20 #define CPUID_XSAVE_XSAVEOPT (1U << 0) #define CPUID_XSAVE_XSAVEC (1U << 1) From nobody Tue Apr 30 01:33:55 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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envelope-from=Babu.Moger@amd.com; helo=NAM11-BN8-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1670010517200100001 Add the following feature bits. no-nested-data-bp : Processor ignores nested data breakpoints. lfence-always-serializing : LFENCE instruction is always serializing. null-select-clears-base : Null Selector Clears Base. When this bit is set, a null segment load clears the segment bas= e. The documentation for the features are available in the links below. a. Processor Programming Reference (PPR) for AMD Family 19h Model 01h, Revision B1 Processors b. AMD64 Architecture Programmer=E2=80=99s Manual Volumes 1=E2=80=935 Publi= cation No. Revision 40332 4.05 Date October 2022 Link: https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip Link: https://www.amd.com/system/files/TechDocs/40332_4.05.pdf Signed-off-by: Babu Moger --- target/i386/cpu.c | 24 ++++++++++++++++++++++++ target/i386/cpu.h | 8 ++++++++ 2 files changed, 32 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index b20e422b2e..e9175da92f 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -918,6 +918,22 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] =3D { .tcg_features =3D 0, .unmigratable_flags =3D 0, }, + [FEAT_8000_0021_EAX] =3D { + .type =3D CPUID_FEATURE_WORD, + .feat_names =3D { + "no-nested-data-bp", NULL, "lfence-always-serializing", NULL, + NULL, NULL, "null-select-clears-base", NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, + }, + .cpuid =3D { .eax =3D 0x80000021, .reg =3D R_EAX, }, + .tcg_features =3D 0, + .unmigratable_flags =3D 0, + }, [FEAT_XSAVE] =3D { .type =3D CPUID_FEATURE_WORD, .feat_names =3D { @@ -6002,6 +6018,10 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,= uint32_t count, *ebx |=3D sev_get_reduced_phys_bits() << 6; } break; + case 0x80000021: + *eax =3D env->features[FEAT_8000_0021_EAX]; + *ebx =3D *ecx =3D *edx =3D 0; + break; default: /* reserved values: zero */ *eax =3D 0; @@ -6429,6 +6449,10 @@ void x86_cpu_expand_features(X86CPU *cpu, Error **er= rp) x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000001F); } =20 + if (env->features[FEAT_8000_0021_EAX]) { + x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x80000021); + } + /* SGX requires CPUID[0x12] for EPC enumeration */ if (env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SGX) { x86_cpu_adjust_level(cpu, &env->cpuid_min_level, 0x12); diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 8c65c92131..42b347051a 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -597,6 +597,7 @@ typedef enum FeatureWord { FEAT_8000_0001_ECX, /* CPUID[8000_0001].ECX */ FEAT_8000_0007_EDX, /* CPUID[8000_0007].EDX */ FEAT_8000_0008_EBX, /* CPUID[8000_0008].EBX */ + FEAT_8000_0021_EAX, /* CPUID[8000_0021].EAX */ FEAT_C000_0001_EDX, /* CPUID[C000_0001].EDX */ FEAT_KVM, /* CPUID[4000_0001].EAX (KVM_CPUID_FEATURES) */ FEAT_KVM_HINTS, /* CPUID[4000_0001].EDX */ @@ -925,6 +926,13 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWor= d w, /* Predictive Store Forwarding Disable */ #define CPUID_8000_0008_EBX_AMD_PSFD (1U << 28) =20 +/* Processor ignores nested data breakpoints */ +#define CPUID_8000_0021_EAX_No_NESTED_DATA_BP (1U << 0) +/* LFENCE is always serializing */ +#define CPUID_8000_0021_EAX_LFENCE_ALWAYS_SERIALIZING (1U << 2) +/* Null Selector Clears Base */ +#define CPUID_8000_0021_EAX_NULL_SELECT_CLEARS_BASE (1U << 6) + #define CPUID_XSAVE_XSAVEOPT (1U << 0) #define CPUID_XSAVE_XSAVEC (1U << 1) #define CPUID_XSAVE_XGETBV1 (1U << 2) From nobody Tue Apr 30 01:33:55 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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envelope-from=Babu.Moger@amd.com; helo=NAM02-BN1-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1670010489388100003 And the following feature bits for EPYC-Milan model and bump the version. vaes : Vector VAES(ENC|DEC), VAES(ENC|DEC)LAST instruction suppo= rt vpclmulqdq : Vector VPCLMULQDQ instruction support stibp-always-on : Single Thread Indirect Branch Prediction Mode has enhanced performance and may be left Always on amd-psfd : Predictive Store Forward Disable no-nested-data-bp : Processor ignores nested data breakpoints lfence-always-serializing : LFENCE instruction is always serializing null-select-clears-base : Null Selector Clears Base. When this bit is set, a null segment load clears the segment base These new features will be added in EPYC-Milan-v2. The -cpu help output after the change. x86 EPYC-Milan (alias configured by machine type) x86 EPYC-Milan-v1 AMD EPYC-Milan Processor x86 EPYC-Milan-v2 AMD EPYC-Milan Processor The documentation for the features are available in the links below. a. Processor Programming Reference (PPR) for AMD Family 19h Model 01h, Revision B1 Processors b. SECURITY ANALYSIS OF AMD PREDICTIVE STORE FORWARDING c. AMD64 Architecture Programmer=E2=80=99s Manual Volumes 1=E2=80=935 Publi= cation No. Revision 40332 4.05 Date October 2022 Link: https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip Link: https://www.amd.com/system/files/documents/security-analysis-predicti= ve-store-forwarding.pdf Link: https://www.amd.com/system/files/TechDocs/40332_4.05.pdf Signed-off-by: Babu Moger --- target/i386/cpu.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 70 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index e9175da92f..54549a5127 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1921,6 +1921,56 @@ static const CPUCaches epyc_milan_cache_info =3D { }, }; =20 +static const CPUCaches epyc_milan_v2_cache_info =3D { + .l1d_cache =3D &(CPUCacheInfo) { + .type =3D DATA_CACHE, + .level =3D 1, + .size =3D 32 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 64, + .lines_per_tag =3D 1, + .self_init =3D 1, + .no_invd_sharing =3D true, + }, + .l1i_cache =3D &(CPUCacheInfo) { + .type =3D INSTRUCTION_CACHE, + .level =3D 1, + .size =3D 32 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 64, + .lines_per_tag =3D 1, + .self_init =3D 1, + .no_invd_sharing =3D true, + }, + .l2_cache =3D &(CPUCacheInfo) { + .type =3D UNIFIED_CACHE, + .level =3D 2, + .size =3D 512 * KiB, + .line_size =3D 64, + .associativity =3D 8, + .partitions =3D 1, + .sets =3D 1024, + .lines_per_tag =3D 1, + }, + .l3_cache =3D &(CPUCacheInfo) { + .type =3D UNIFIED_CACHE, + .level =3D 3, + .size =3D 32 * MiB, + .line_size =3D 64, + .associativity =3D 16, + .partitions =3D 1, + .sets =3D 32768, + .lines_per_tag =3D 1, + .self_init =3D true, + .inclusive =3D true, + .complex_indexing =3D false, + }, +}; + /* The following VMX features are not supported by KVM and are left out in= the * CPU definitions: * @@ -4270,6 +4320,26 @@ static const X86CPUDefinition builtin_x86_defs[] =3D= { .xlevel =3D 0x8000001E, .model_id =3D "AMD EPYC-Milan Processor", .cache_info =3D &epyc_milan_cache_info, + .versions =3D (X86CPUVersionDefinition[]) { + { .version =3D 1 }, + { + .version =3D 2, + .props =3D (PropValue[]) { + { "model-id", + "AMD EPYC-Milan-v2 Processor" }, + { "vaes", "on" }, + { "vpclmulqdq", "on" }, + { "stibp-always-on", "on" }, + { "amd-psfd", "on" }, + { "no-nested-data-bp", "on" }, + { "lfence-always-serializing", "on" }, + { "null-select-clears-base", "on" }, + { /* end of list */ } + }, + .cache_info =3D &epyc_milan_v2_cache_info + }, + { /* end of list */ } + } }, }; =20