[Qemu-devel] [PULL 5/7] i386: Initialize cache information for EPYC family processors

[Eduardo Habkost]

From: Babu Moger <address@hidden>

Initialize pre-determined cache information for EPYC processors.

Signed-off-by: Babu Moger <address@hidden>
Tested-by: Geoffrey McRae <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Eduardo Habkost <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 55685ed19d..174a8f434b 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1109,6 +1109,56 @@ 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",
@@ -2345,6 +2395,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_6_EAX_ARAT,
         .xlevel = 0x8000000A,
         .model_id = "AMD EPYC Processor",
+        .cache_info = &epyc_cache_info,
     },
     {
         .name = "EPYC-IBPB",
@@ -2391,6 +2442,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_6_EAX_ARAT,
         .xlevel = 0x8000000A,
         .model_id = "AMD EPYC Processor (with IBPB)",
+        .cache_info = &epyc_cache_info,
     },
 };
 
-- 
2.14.3