From: H.J. Lu <hjl.tools@gmail.com>
Date: Sat, 12 Apr 2025 15:37:29 +0000 (-0700)
Subject: x86: Detect Intel Diamond Rapids
X-Git-Tag: glibc-2.42~314
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de14f1959ee5f9b845a7cae43bee03068b8136f0;p=thirdparty%2Fglibc.git

x86: Detect Intel Diamond Rapids

Detect Intel Diamond Rapids and tune it similar to Intel Granite Rapids.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
---

diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index b13b7b76fa..e50f1d6932 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -542,6 +542,7 @@ enum intel_microarch
   INTEL_BIGCORE_ARROWLAKE,
   INTEL_BIGCORE_PANTHERLAKE,
   INTEL_BIGCORE_GRANITERAPIDS,
+  INTEL_BIGCORE_DIAMONDRAPIDS,
 
   /* Mixed (bigcore + atom SOC).  */
   INTEL_MIXED_LAKEFIELD,
@@ -817,6 +818,16 @@ disable_tsx:
 	      break;
 	    }
 	}
+      else if (family == 19)
+	switch (model)
+	  {
+	  case 0x01:
+	    microarch = INTEL_BIGCORE_DIAMONDRAPIDS;
+	    break;
+
+	  default:
+	    break;
+	  }
 
       switch (microarch)
 	{
@@ -926,6 +937,7 @@ disable_tsx:
 	case INTEL_BIGCORE_SAPPHIRERAPIDS:
 	case INTEL_BIGCORE_EMERALDRAPIDS:
 	case INTEL_BIGCORE_GRANITERAPIDS:
+	case INTEL_BIGCORE_DIAMONDRAPIDS:
 	  /* Default tuned Mixed (bigcore + atom SOC). */
 	case INTEL_MIXED_LAKEFIELD:
 	case INTEL_MIXED_ALDERLAKE: