Commit acf74c1e8b for qemu.org
commit acf74c1e8b91599ce330df9c86d3e944dc512ce4
Author: Zhao Liu <zhao1.liu@intel.com>
Date: Tue Mar 10 22:08:19 2026 +0800
i386/cpu: Enable CPUID 0x1f & cache model for ClearwaterForest
ClearwaterForest has CPUID 0x1f by default, so force enabling this leaf
for it (ClearwaterForect-v3).
And add the cache model to ClearwaterForest (v3) to better emulate its
environment.
The cache model is based on ClearwaterForest-AP (Advanced 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 = 0x0 (0)
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 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 = 0x0 (0)
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 = 0x80 (128)
WBINVD/INVD acts on lower caches = false
inclusive to lower caches = false
complex cache indexing = false
number of sets (s) = 128
(size synth) = 65536 (64 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 = 0x7 (7)
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 = 0x1000 (4096)
WBINVD/INVD acts on lower caches = false
inclusive to lower caches = false
complex cache indexing = false
number of sets (s) = 4096
(size synth) = 4194304 (4 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 = 0x3ff (1023)
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 = 0x84000 (540672)
WBINVD/INVD acts on lower caches = false
inclusive to lower caches = false
complex cache indexing = true
number of sets (s) = 540672
(size synth) = 553648128 (528 MB)
--- cache 4 ---
cache type = no more caches (0)
Suggested-by: Zhijun Zeng <zhijun.zeng@intel.com>
Suggested-by: Chao Peng <chao.p.peng@intel.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20260310140819.1563084-6-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index cd44a62420..1debc0c61f 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -3318,6 +3318,97 @@ static const CPUCaches xeon_srf_cache_info = {
},
};
+static const CPUCaches xeon_cwf_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 = 8,
+
+ /* CPUID 0x4.0x0.ECX */
+ .sets = 64,
+
+ /* CPUID 0x4.0x0.EDX */
+ .no_invd_sharing = false,
+ .inclusive = false,
+ .complex_indexing = false,
+
+ .size = 32 * 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 = 128,
+
+ /* CPUID 0x4.0x1.EDX */
+ .no_invd_sharing = false,
+ .inclusive = false,
+ .complex_indexing = false,
+
+ .size = 64 * 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 = 4096,
+
+ /* CPUID 0x4.0x2.EDX */
+ .no_invd_sharing = false,
+ .inclusive = false,
+ .complex_indexing = false,
+
+ .size = 4 * MiB,
+ .share_level = CPU_TOPOLOGY_LEVEL_MODULE,
+ },
+ .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 = 16,
+
+ /* CPUID 0x4.0x3.ECX */
+ .sets = 540672,
+
+ /* CPUID 0x4.0x3.EDX */
+ .no_invd_sharing = false,
+ .inclusive = false,
+ .complex_indexing = true,
+
+ .size = 528 * MiB,
+ .share_level = CPU_TOPOLOGY_LEVEL_SOCKET,
+ },
+};
+
static const CPUCaches yongfeng_cache_info = {
.l1d_cache = &(CPUCacheInfo) {
/* CPUID 0x4.0x0.EAX */
@@ -5963,9 +6054,11 @@ static const X86CPUDefinition builtin_x86_defs[] = {
},
{
.version = 3,
- .note = "with its-no",
+ .note = "with its-no, cwf-ap cache model and 0x1f leaf",
+ .cache_info = &xeon_cwf_cache_info,
.props = (PropValue[]) {
{ "its-no", "on" },
+ { "x-force-cpuid-0x1f", "on" },
{ /* end of list */ },
}
},