[Qemu-devel] [PATCH v8 4/8] i386: Initialize cache information for EPYC family processors

[Babu Moger]

Initialize pre-determined cache information for EPYC processors.

Signed-off-by: Babu Moger <address@hidden>
Tested-by: Geoffrey McRae <address@hidden>
---
 target/i386/cpu.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index d97b290b08..b20b8691a7 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1112,6 +1112,56 @@ struct X86CPUDefinition {
     CPUCaches *cache_info;
 };
 
+static CPUCaches epyc_cache_info = {
+    .l1d_cache = {
+        .type = DCACHE,
+        .level = 1,
+        .size = 32 * KiB,
+        .line_size = 64,
+        .associativity = 8,
+        .partitions = 1,
+        .sets = 64,
+        .lines_per_tag = 1,
+        .self_init = 1,
+        .no_invd_sharing = true,
+    },
+    .l1i_cache = {
+        .type = ICACHE,
+        .level = 1,
+        .size = 64 * KiB,
+        .line_size = 64,
+        .associativity = 4,
+        .partitions = 1,
+        .sets = 256,
+        .lines_per_tag = 1,
+        .self_init = 1,
+        .no_invd_sharing = true,
+    },
+    .l2_cache = {
+        .type = UNIFIED_CACHE,
+        .level = 2,
+        .size = 512 * KiB,
+        .line_size = 64,
+        .associativity = 8,
+        .partitions = 1,
+        .sets = 1024,
+        .lines_per_tag = 1,
+    },
+    .l3_cache = {
+        .type = UNIFIED_CACHE,
+        .level = 3,
+        .size = 8 * MiB,
+        .line_size = 64,
+        .associativity = 16,
+        .partitions = 1,
+        .sets = 8192,
+        .lines_per_tag = 1,
+        .self_init = true,
+        .inclusive = true,
+        .complex_indexing = true,
+    },
+};
+
 static X86CPUDefinition builtin_x86_defs[] = {
     {
         .name = "qemu64",
@@ -2306,6 +2356,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_6_EAX_ARAT,
         .xlevel = 0x8000000A,
         .model_id = "AMD EPYC Processor",
+        .cache_info = &epyc_cache_info,
     },
     {
         .name = "EPYC-IBPB",
@@ -2352,6 +2403,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_6_EAX_ARAT,
         .xlevel = 0x8000000A,
         .model_id = "AMD EPYC Processor (with IBPB)",
+        .cache_info = &epyc_cache_info,
     },
 };
 
-- 
2.17.0