linux-kernel - [PATCH v1 09/12] tools/x86/kcpuid: Define Transmeta and Centaur index ranges

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Message-ID: <20250306205000.227399-10-darwi@linutronix.de>
Date: Thu,  6 Mar 2025 21:49:57 +0100
From: "Ahmed S. Darwish" <darwi@...utronix.de>
To: Borislav Petkov <bp@...en8.de>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	x86@...nel.org,
	John Ogness <john.ogness@...utronix.de>,
	x86-cpuid@...ts.linux.dev,
	LKML <linux-kernel@...r.kernel.org>,
	"Ahmed S. Darwish" <darwi@...utronix.de>
Subject: [PATCH v1 09/12] 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>
---
 tools/arch/x86/kcpuid/kcpuid.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 3153c8eba0c4..823226fbf089 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -83,6 +83,8 @@ static enum cpu_vendor this_cpu_vendor;
 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
@@ -105,6 +107,12 @@ static struct cpuid_range ranges[] = {
 	{	.index		= RANGE_EXT,
 		.vendors	= VENDOR_ALL,
 	},
+	{	.index		= RANGE_TSM,
+		.vendors	= VENDOR_TRANSMETA,
+	},
+	{	.index		= RANGE_CTR,
+		.vendors	= VENDOR_CENTAUR,
+	},
 };
 
 static char *range_to_str(struct cpuid_range *range)
@@ -112,6 +120,8 @@ 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;
 	}
 }
-- 
2.48.1