On Thu, Jun 26, 2025 at 04:31:00PM +0800, Zhao Liu wrote:
> Add the cache model to SapphireRapids (v4) to better emulate its
> environment.
>
> The cache model is based on SapphireRapids-SP (Scalable Performance):
>
> --- cache 0 ---
> cache type = data cache (1)
> cache level = 0x1 (1)
> self-initializing cache level = true
> fully associative cache = false
> maximum IDs for CPUs sharing cache = 0x1 (1)
> maximum IDs for cores in pkg = 0x3f (63)
> system coherency line size = 0x40 (64)
> physical line partitions = 0x1 (1)
> ways of associativity = 0xc (12)
> number of sets = 0x40 (64)
> WBINVD/INVD acts on lower caches = false
> inclusive to lower caches = false
> complex cache indexing = false
> number of sets (s) = 64
> (size synth) = 49152 (48 KB)
> --- cache 1 ---
> cache type = instruction cache (2)
> cache level = 0x1 (1)
> self-initializing cache level = true
> fully associative cache = false
> maximum IDs for CPUs sharing cache = 0x1 (1)
> maximum IDs for cores in pkg = 0x3f (63)
> system coherency line size = 0x40 (64)
> physical line partitions = 0x1 (1)
> ways of associativity = 0x8 (8)
> number of sets = 0x40 (64)
> WBINVD/INVD acts on lower caches = false
> inclusive to lower caches = false
> complex cache indexing = false
> number of sets (s) = 64
> (size synth) = 32768 (32 KB)
> --- cache 2 ---
> cache type = unified cache (3)
> cache level = 0x2 (2)
> self-initializing cache level = true
> fully associative cache = false
> maximum IDs for CPUs sharing cache = 0x1 (1)
> maximum IDs for cores in pkg = 0x3f (63)
> system coherency line size = 0x40 (64)
> physical line partitions = 0x1 (1)
> ways of associativity = 0x10 (16)
> number of sets = 0x800 (2048)
> WBINVD/INVD acts on lower caches = false
> inclusive to lower caches = false
> complex cache indexing = false
> number of sets (s) = 2048
> (size synth) = 2097152 (2 MB)
> --- cache 3 ---
> cache type = unified cache (3)
> cache level = 0x3 (3)
> self-initializing cache level = true
> fully associative cache = false
> maximum IDs for CPUs sharing cache = 0x7f (127)
> maximum IDs for cores in pkg = 0x3f (63)
> system coherency line size = 0x40 (64)
> physical line partitions = 0x1 (1)
> ways of associativity = 0xf (15)
> number of sets = 0x10000 (65536)
> WBINVD/INVD acts on lower caches = false
> inclusive to lower caches = false
> complex cache indexing = true
> number of sets (s) = 65536
> (size synth) = 62914560 (60 MB)
> --- cache 4 ---
> cache type = no more caches (0)
>
> Suggested-by: Tejus GK <tejus...@nutanix.com>
> Suggested-by: Jason Zeng <jason.z...@intel.com>
> Suggested-by: "Daniel P . Berrangé" <berra...@redhat.com>
> Signed-off-by: Zhao Liu <zhao1....@intel.com>
> ---
> target/i386/cpu.c | 96 +++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 96 insertions(+)
>
> diff --git a/target/i386/cpu.c b/target/i386/cpu.c
> index b40f1a5b6648..a7f2e5dd3fcb 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -2886,6 +2886,97 @@ static const CPUCaches epyc_turin_cache_info = {
> }
> };
>
> +static const CPUCaches xeon_spr_cache_info = {
> + .l1d_cache = &(CPUCacheInfo) {
> + /* CPUID 0x4.0x0.EAX */
> + .type = DATA_CACHE,
> + .level = 1,
> + .self_init = true,
> +
> + /* CPUID 0x4.0x0.EBX */
> + .line_size = 64,
> + .partitions = 1,
> + .associativity = 12,
> +
> + /* CPUID 0x4.0x0.ECX */
> + .sets = 64,
> +
> + /* CPUID 0x4.0x0.EDX */
> + .no_invd_sharing = false,
> + .inclusive = false,
> + .complex_indexing = false,
> +
> + .size = 48 * KiB,
> + .share_level = CPU_TOPOLOGY_LEVEL_CORE,
> + },
> + .l1i_cache = &(CPUCacheInfo) {
> + /* CPUID 0x4.0x1.EAX */
> + .type = INSTRUCTION_CACHE,
> + .level = 1,
> + .self_init = true,
> +
> + /* CPUID 0x4.0x1.EBX */
> + .line_size = 64,
> + .partitions = 1,
> + .associativity = 8,
> +
> + /* CPUID 0x4.0x1.ECX */
> + .sets = 64,
> +
> + /* CPUID 0x4.0x1.EDX */
> + .no_invd_sharing = false,
> + .inclusive = false,
> + .complex_indexing = false,
> +
> + .size = 32 * KiB,
> + .share_level = CPU_TOPOLOGY_LEVEL_CORE,
> + },
> + .l2_cache = &(CPUCacheInfo) {
> + /* CPUID 0x4.0x2.EAX */
> + .type = UNIFIED_CACHE,
> + .level = 2,
> + .self_init = true,
> +
> + /* CPUID 0x4.0x2.EBX */
> + .line_size = 64,
> + .partitions = 1,
> + .associativity = 16,
> +
> + /* CPUID 0x4.0x2.ECX */
> + .sets = 2048,
> +
> + /* CPUID 0x4.0x2.EDX */
> + .no_invd_sharing = false,
> + .inclusive = false,
> + .complex_indexing = false,
> +
> + .size = 2 * MiB,
> + .share_level = CPU_TOPOLOGY_LEVEL_CORE,
> + },
> + .l3_cache = &(CPUCacheInfo) {
> + /* CPUID 0x4.0x3.EAX */
> + .type = UNIFIED_CACHE,
> + .level = 3,
> + .self_init = true,
> +
> + /* CPUID 0x4.0x3.EBX */
> + .line_size = 64,
> + .partitions = 1,
> + .associativity = 15,
> +
> + /* CPUID 0x4.0x3.ECX */
> + .sets = 65536,
> +
> + /* CPUID 0x4.0x3.EDX */
> + .no_invd_sharing = false,
> + .inclusive = false,
> + .complex_indexing = true,
> +
> + .size = 60 * MiB,
> + .share_level = CPU_TOPOLOGY_LEVEL_SOCKET,
> + },
> +};
> +
> static const CPUCaches xeon_gnr_cache_info = {
> .l1d_cache = &(CPUCacheInfo) {
> /* CPUID 0x4.0x0.EAX */
> @@ -4892,6 +4983,11 @@ static const X86CPUDefinition builtin_x86_defs[] = {
> { /* end of list */ }
> }
> },
> + {
> + .version = 4,
> + .note = "with spr-sp cache model",
> + .cache_info = &xeon_spr_cache_info,
> + },
> { /* end of list */ }
> }
> },
Reviewed-by: Tao Su <tao1...@linux.intel.com>
> --
> 2.34.1
>
>
