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From: Terry Bowman <terry.bowman@amd.com>
To: <terry.bowman@amd.com>, <linux-kernel@vger.kernel.org>,
	<bp@suse.de>, <feng.tang@intel.com>, <x86@kernel.org>
Subject: [PATCH 1/3] tools/x86/kcpuid: Fix avx512bw and avx512lvl fields in Fn00000007
Date: Mon, 6 Feb 2023 08:18:30 -0600	[thread overview]
Message-ID: <20230206141832.4162264-2-terry.bowman@amd.com> (raw)
In-Reply-To: <20230206141832.4162264-1-terry.bowman@amd.com>

Leaf Fn00000007 contains avx512bw at bit26 and avx512vl at bit28. This
is incorrect per the SDM. Correct avx512bw to be bit30 and avx512lvl to be
bit31.[1]

[1] Intel 64 and IA-32 Architectures Software Developer's Manual
    Combined Volumes: 1, 2A, 2B, 2C, 2D, 3A, 3B, 3C, 3D and 4, December
    2022, pg 3-220,Vol2A

Fixes: c6b2f240bf8d ("tools/x86: Add a kcpuid tool to show raw CPU features")
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Cc: feng.tang@intel.com <feng.tang@intel.com>
Cc: x86@kernel.org
---
 tools/arch/x86/kcpuid/cpuid.csv | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/arch/x86/kcpuid/cpuid.csv b/tools/arch/x86/kcpuid/cpuid.csv
index 4f1c4b0c29e9..9914bdf4fc9e 100644
--- a/tools/arch/x86/kcpuid/cpuid.csv
+++ b/tools/arch/x86/kcpuid/cpuid.csv
@@ -184,8 +184,8 @@
 	 7,    0,  EBX,     27, avx512er, AVX512 Exponent Reciproca instr
 	 7,    0,  EBX,     28, avx512cd, AVX512 Conflict Detection instr
 	 7,    0,  EBX,     29, sha, Intel Secure Hash Algorithm Extensions instr
-	 7,    0,  EBX,     26, avx512bw, AVX512 Byte & Word instr
-	 7,    0,  EBX,     28, avx512vl, AVX512 Vector Length Extentions (VL)
+	 7,    0,  EBX,     30, avx512bw, AVX512 Byte & Word instr
+	 7,    0,  EBX,     31, avx512vl, AVX512 Vector Length Extentions (VL)
 	 7,    0,  ECX,      0, prefetchwt1, X
 	 7,    0,  ECX,      1, avx512vbmi, AVX512 Vector Byte Manipulation Instructions
 	 7,    0,  ECX,      2, umip, User-mode Instruction Prevention
-- 
2.34.1


  reply	other threads:[~2023-02-06 14:19 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-06 14:18 [PATCH 0/3] Update kcpuid leaves and tool Terry Bowman
2023-02-06 14:18 ` Terry Bowman [this message]
2023-02-07  3:28   ` [PATCH 1/3] tools/x86/kcpuid: Fix avx512bw and avx512lvl fields in Fn00000007 Feng Tang
2023-03-07 22:41   ` [tip: x86/misc] " tip-bot2 for Terry Bowman
2023-02-06 14:18 ` [PATCH 2/3] tools/x86/kcpuid: Update AMD leaf Fn80000001 Terry Bowman
2023-02-07  3:49   ` Feng Tang
2023-02-07 15:47     ` Borislav Petkov
2023-02-08  6:15       ` Feng Tang
2023-03-07 22:41   ` [tip: x86/misc] " tip-bot2 for Terry Bowman
2023-02-06 14:18 ` [PATCH 3/3] tools/x86/kcpuid: Dump the CPUID function in detailed view Terry Bowman
2023-02-07  3:42   ` Feng Tang
2023-02-07 16:17     ` Borislav Petkov
2023-02-08  6:13       ` Feng Tang
2023-03-07 22:41   ` [tip: x86/misc] " tip-bot2 for Borislav Petkov (AMD)

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