linux-kernel - [tip: x86/cpu] tools/x86/kcpuid: Define Transmeta and Centaur index ranges

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Message-ID: <174289353908.14745.12953304603563985943.tip-bot2@tip-bot2>
Date: Tue, 25 Mar 2025 09:05:39 -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>,
 Josh Poimboeuf <jpoimboe@...hat.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject:
 [tip: x86/cpu] tools/x86/kcpuid: Define Transmeta and Centaur index ranges

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

Commit-ID:     87669e74d8481a066eb8d319cef7b2ea93d4e24b
Gitweb:        https://git.kernel.org/tip/87669e74d8481a066eb8d319cef7b2ea93d4e24b
Author:        Ahmed S. Darwish <darwi@...utronix.de>
AuthorDate:    Mon, 24 Mar 2025 15:20:36 +01:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Tue, 25 Mar 2025 09:53:46 +01:00

tools/x86/kcpuid: Define Transmeta and Centaur index ranges

Explicitly define the CPUID index ranges for Transmeta (0x80860000) and
Centaur/Zhaoxin (0xc0000000).

Without these explicit definitions, their respective CPUID indices would
be skipped during CSV bitfield parsing.

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>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Link: https://lore.kernel.org/r/20250324142042.29010-16-darwi@linutronix.de
---
 tools/arch/x86/kcpuid/kcpuid.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index fe3d058..7dc6b92 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -69,6 +69,8 @@ struct cpuid_func {
 enum range_index {
 	RANGE_STD = 0,			/* Standard */
 	RANGE_EXT = 0x80000000,		/* Extended */
+	RANGE_TSM = 0x80860000,		/* Transmeta */
+	RANGE_CTR = 0xc0000000,		/* Centaur/Zhaoxin */
 };

 #define CPUID_INDEX_MASK		0xffff0000
@@ -85,6 +87,8 @@ struct cpuid_range {
 static struct cpuid_range ranges[] = {
 	{	.index		= RANGE_STD,	},
 	{	.index		= RANGE_EXT,	},
+	{	.index		= RANGE_TSM,	},
+	{	.index		= RANGE_CTR,	},
 };

 static char *range_to_str(struct cpuid_range *range)
@@ -92,6 +96,8 @@ static char *range_to_str(struct cpuid_range *range)
 	switch (range->index) {
 	case RANGE_STD:		return "Standard";
 	case RANGE_EXT:		return "Extended";
+	case RANGE_TSM:		return "Transmeta";
+	case RANGE_CTR:		return "Centaur";
 	default:		return NULL;
 	}
 }