diff mbox series

[RFC,5/8] i386/cpu: Support thread and module level cache topology

Message ID 20240220092504.726064-6-zhao1.liu@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series Introduce SMP Cache Topology | expand

Commit Message

Zhao Liu Feb. 20, 2024, 9:25 a.m. UTC 
From: Zhao Liu <zhao1.liu@intel.com>

Allows cache to be defined at the thread and module level. This
increases flexibility for x86 users to customize their cache topology.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
 target/i386/cpu.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)
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Patch

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 725d7e70182d..d7cb0f1e49b4 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -241,9 +241,15 @@  static uint32_t max_thread_ids_for_cache(X86CPUTopoInfo *topo_info,
     uint32_t num_ids = 0;
 
     switch (share_level) {
+    case CPU_TOPO_LEVEL_THREAD:
+        num_ids = 1;
+        break;
     case CPU_TOPO_LEVEL_CORE:
         num_ids = 1 << apicid_core_offset(topo_info);
         break;
+    case CPU_TOPO_LEVEL_MODULE:
+        num_ids = 1 << apicid_module_offset(topo_info);
+        break;
     case CPU_TOPO_LEVEL_DIE:
         num_ids = 1 << apicid_die_offset(topo_info);
         break;
@@ -251,10 +257,6 @@  static uint32_t max_thread_ids_for_cache(X86CPUTopoInfo *topo_info,
         num_ids = 1 << apicid_pkg_offset(topo_info);
         break;
     default:
-        /*
-         * Currently there is no use case for SMT and MODULE, so use
-         * assert directly to facilitate debugging.
-         */
         g_assert_not_reached();
     }