linux-kernel - [tip: x86/cpu] x86/cacheinfo: Relocate CPUID leaf 0x4 cache

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Message-ID: <174289537607.14745.2935347826470506217.tip-bot2@tip-bot2>
Date: Tue, 25 Mar 2025 09:36:16 -0000
From: "tip-bot2 for Ahmed S. Darwish" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: "Ahmed S. Darwish" <darwi@...utronix.de>, Ingo Molnar <mingo@...nel.org>,
 "H. Peter Anvin" <hpa@...or.com>,
 Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject:
 [tip: x86/cpu] x86/cacheinfo: Relocate CPUID leaf 0x4 cache_type mapping

The following commit has been merged into the x86/cpu branch of tip:

Commit-ID:     eeeebc4fc642f492522e4be92dcaf22119123581
Gitweb:        https://git.kernel.org/tip/eeeebc4fc642f492522e4be92dcaf22119123581
Author:        Ahmed S. Darwish <darwi@...utronix.de>
AuthorDate:    Mon, 24 Mar 2025 14:33:22 +01:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Tue, 25 Mar 2025 10:23:27 +01:00

x86/cacheinfo: Relocate CPUID leaf 0x4 cache_type mapping

The cache_type_map[] array is used to map Intel leaf 0x4 cache_type
values to their corresponding types at <linux/cacheinfo.h>.

Move that array's definition after the actual CPUID leaf 0x4 structures,
instead of having it in the middle of AMD leaf 0x4 emulation code.

Signed-off-by: Ahmed S. Darwish <darwi@...utronix.de>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Link: https://lore.kernel.org/r/20250324133324.23458-28-darwi@linutronix.de
---
 arch/x86/kernel/cpu/cacheinfo.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c
index 231470c..e0d531e 100644
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
@@ -78,6 +78,14 @@ struct _cpuid4_info {
 	unsigned long size;
 };

+/* Map CPUID(4) EAX.cache_type to linux/cacheinfo.h types */
+static const enum cache_type cache_type_map[] = {
+	[CTYPE_NULL]	= CACHE_TYPE_NOCACHE,
+	[CTYPE_DATA]	= CACHE_TYPE_DATA,
+	[CTYPE_INST]	= CACHE_TYPE_INST,
+	[CTYPE_UNIFIED] = CACHE_TYPE_UNIFIED,
+};
+
 /*
  * Fallback AMD CPUID(4) emulation
  * AMD CPUs with TOPOEXT can just use CPUID(0x8000001d)
@@ -131,13 +139,6 @@ static const unsigned short assocs[] = {
 static const unsigned char levels[] = { 1, 1, 2, 3 };
 static const unsigned char types[] = { 1, 2, 3, 3 };

-static const enum cache_type cache_type_map[] = {
-	[CTYPE_NULL] = CACHE_TYPE_NOCACHE,
-	[CTYPE_DATA] = CACHE_TYPE_DATA,
-	[CTYPE_INST] = CACHE_TYPE_INST,
-	[CTYPE_UNIFIED] = CACHE_TYPE_UNIFIED,
-};
-
 static void legacy_amd_cpuid4(int index, union _cpuid4_leaf_eax *eax,
 			      union _cpuid4_leaf_ebx *ebx, union _cpuid4_leaf_ecx *ecx)
 {