From 768e39f40b394eb4524a83857b86e8f7497f4414 Mon Sep 17 00:00:00 2001 From: Babu Moger Date: Thu, 8 May 2025 14:58:03 -0500 Subject: [PATCH 21/57] target/i386: Update EPYC-Genoa for Cache property, perfmon-v2, RAS and SVM feature bits RH-Author: John Allen RH-MergeRequest: 378: Update EPYC Models and Feature Bits RH-Jira: RHEL-52649 RH-Acked-by: Miroslav Rezanina RH-Commit: [7/8] b144233a1115385a1f792c4454f4511173f753d8 (johnalle/qemu-kvm-fork) Found that some of the cache properties are not set correctly for EPYC models. l1d_cache.no_invd_sharing should not be true. l1i_cache.no_invd_sharing should not be true. L2.self_init should be true. L2.inclusive should be true. L3.inclusive should not be true. L3.no_invd_sharing should be true. Fix these cache properties. Also add the missing RAS and SVM features bits on AMD EPYC-Genoa model. The SVM feature bits are used in nested guests. perfmon-v2 : Allow guests to make use of the PerfMonV2 features. succor : Software uncorrectable error containment and recovery capability. overflow-recov : MCA overflow recovery support. lbrv : LBR virtualization tsc-scale : MSR based TSC rate control vmcb-clean : VMCB clean bits flushbyasid : Flush by ASID pause-filter : Pause intercept filter pfthreshold : PAUSE filter threshold v-vmsave-vmload: Virtualized VMLOAD and VMSAVE vgif : Virtualized GIF fs-gs-base-ns : WRMSR to {FS,GS,KERNEL_GS}_BASE is non-serializing The feature details are available in APM listed below [1]. [1] AMD64 Architecture Programmer's Manual Volume 2: System Programming Publication # 24593 Revision 3.41. Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 Signed-off-by: Babu Moger Reviewed-by: Maksim Davydov Reviewed-by: Zhao Liu Link: https://lore.kernel.org/r/afe3f05d4116124fd5795f28fc23d7b396140313.1746734284.git.babu.moger@amd.com Signed-off-by: Paolo Bonzini (cherry picked from commit abc92cc8488b5dbcc403b5be24d8092180605101) JIRA: https://issues.redhat.com/browse/RHEL-52649 Signed-off-by: John Allen --- target/i386/cpu.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 79 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 2218071fca..2bc2d41259 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -2598,6 +2598,59 @@ static const CPUCaches epyc_genoa_cache_info = { }, }; +static const CPUCaches epyc_genoa_v2_cache_info = { + .l1d_cache = &(CPUCacheInfo) { + .type = DATA_CACHE, + .level = 1, + .size = 32 * KiB, + .line_size = 64, + .associativity = 8, + .partitions = 1, + .sets = 64, + .lines_per_tag = 1, + .self_init = true, + .share_level = CPU_TOPO_LEVEL_CORE, + }, + .l1i_cache = &(CPUCacheInfo) { + .type = INSTRUCTION_CACHE, + .level = 1, + .size = 32 * KiB, + .line_size = 64, + .associativity = 8, + .partitions = 1, + .sets = 64, + .lines_per_tag = 1, + .self_init = true, + .share_level = CPU_TOPO_LEVEL_CORE, + }, + .l2_cache = &(CPUCacheInfo) { + .type = UNIFIED_CACHE, + .level = 2, + .size = 1 * MiB, + .line_size = 64, + .associativity = 8, + .partitions = 1, + .sets = 2048, + .lines_per_tag = 1, + .self_init = true, + .inclusive = true, + .share_level = CPU_TOPO_LEVEL_CORE, + }, + .l3_cache = &(CPUCacheInfo) { + .type = UNIFIED_CACHE, + .level = 3, + .size = 32 * MiB, + .line_size = 64, + .associativity = 16, + .partitions = 1, + .sets = 32768, + .lines_per_tag = 1, + .self_init = true, + .no_invd_sharing = true, + .complex_indexing = false, + .share_level = CPU_TOPO_LEVEL_DIE, + }, +}; /* The following VMX features are not supported by KVM and are left out in the * CPU definitions: * @@ -5530,7 +5583,7 @@ static const X86CPUDefinition builtin_x86_defs[] = { CPUID_8000_0008_EBX_STIBP_ALWAYS_ON | CPUID_8000_0008_EBX_AMD_SSBD | CPUID_8000_0008_EBX_AMD_PSFD, .features[FEAT_8000_0021_EAX] = - CPUID_8000_0021_EAX_No_NESTED_DATA_BP | + CPUID_8000_0021_EAX_NO_NESTED_DATA_BP | CPUID_8000_0021_EAX_LFENCE_ALWAYS_SERIALIZING | CPUID_8000_0021_EAX_NULL_SEL_CLR_BASE | CPUID_8000_0021_EAX_AUTO_IBRS, @@ -5565,6 +5618,31 @@ static const X86CPUDefinition builtin_x86_defs[] = { .xlevel = 0x80000022, .model_id = "AMD EPYC-Genoa Processor", .cache_info = &epyc_genoa_cache_info, + .versions = (X86CPUVersionDefinition[]) { + { .version = 1 }, + { + .version = 2, + .props = (PropValue[]) { + { "overflow-recov", "on" }, + { "succor", "on" }, + { "lbrv", "on" }, + { "tsc-scale", "on" }, + { "vmcb-clean", "on" }, + { "flushbyasid", "on" }, + { "pause-filter", "on" }, + { "pfthreshold", "on" }, + { "v-vmsave-vmload", "on" }, + { "vgif", "on" }, + { "fs-gs-base-ns", "on" }, + { "perfmon-v2", "on" }, + { "model-id", + "AMD EPYC-Genoa-v2 Processor" }, + { /* end of list */ } + }, + .cache_info = &epyc_genoa_v2_cache_info + }, + { /* end of list */ } + } }, }; -- 2.39.3