linux-kernel - [PATCH] x86/cpu: Comment Skylake server stepping too

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Message-ID: <20210409121027.16437-1-andrew.cooper3@citrix.com>
Date:   Fri, 9 Apr 2021 13:10:27 +0100
From:   Andrew Cooper <andrew.cooper3@...rix.com>
To:     LKML <linux-kernel@...r.kernel.org>
CC:     Andrew Cooper <andrew.cooper3@...rix.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Tony Luck <tony.luck@...el.com>, <x86@...nel.org>
Subject: [PATCH] x86/cpu: Comment Skylake server stepping too

Further to commit 53375a5a218e ("x86/cpu: Resort and comment Intel
models"), CascadeLake and CooperLake are steppings of Skylake, and make up
the 1st to 3rd generation "Xeon Scalable Processor" line.

Signed-off-by: Andrew Cooper <andrew.cooper3@...rix.com>
---
CC: Peter Zijlstra <peterz@...radead.org>
CC: Tony Luck <tony.luck@...el.com>
CC: x86@...nel.org
CC: linux-kernel@...r.kernel.org

It is left as an exercise to the reader to ponder why the 3rd generation Xeon
Scalable brand is formed of both CooperLake and IceLake parts.
---
 arch/x86/include/asm/intel-family.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
index b15262f1f645..955b06d6325a 100644
--- a/arch/x86/include/asm/intel-family.h
+++ b/arch/x86/include/asm/intel-family.h
@@ -33,7 +33,7 @@
  *		_EX	- 4+ socket server parts
  *
  * The #define line may optionally include a comment including platform or core
- * names. An exception is made for kabylake where steppings seem to have gotten
+ * names. An exception is made for skylake/kabylake where steppings seem to have gotten
  * their own names :-(
  */
 
@@ -74,6 +74,8 @@
 #define INTEL_FAM6_SKYLAKE_L		0x4E	/* Sky Lake             */
 #define INTEL_FAM6_SKYLAKE		0x5E	/* Sky Lake             */
 #define INTEL_FAM6_SKYLAKE_X		0x55	/* Sky Lake             */
+/*                 CASCADELAKE_X	0x55	   Sky Lake -- s: 7     */
+/*                 COOPERLAKE_X		0x55	   Sky Lake -- s: 11    */
 
 #define INTEL_FAM6_KABYLAKE_L		0x8E	/* Sky Lake             */
 /*                 AMBERLAKE_L		0x8E	   Sky Lake -- s: 9     */
-- 
2.11.0