Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261845AbVD0BRs (ORCPT ); Tue, 26 Apr 2005 21:17:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261880AbVD0BRs (ORCPT ); Tue, 26 Apr 2005 21:17:48 -0400 Received: from 70-56-217-9.albq.qwest.net ([70.56.217.9]:42216 "EHLO montezuma.fsmlabs.com") by vger.kernel.org with ESMTP id S261845AbVD0BRo (ORCPT ); Tue, 26 Apr 2005 21:17:44 -0400 Date: Tue, 26 Apr 2005 19:20:23 -0600 (MDT) From: Zwane Mwaikambo To: Andrew Morton cc: Andi Kleen , Linux Kernel Subject: [PATCH] cpuid x87 bit on AMD falsely marked as PNI Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2594 Lines: 58 http://bugme.osdl.org/show_bug.cgi?id=4426 vendor_id : AuthenticAMD cpu family : 6 model : 10 model name : AMD Athlon(tm) XP stepping : 0 cpu MHz : 2204.807 cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse pni syscall mmxext 3dnowext 3dnow bogomips : 4358.14 We're marking bit 0 of extended function 0x80000001 cpuid as PNI support on AMD processors, when it actually denotes x87 FPU present. Patch for i386 and x86_64 below. Signed-off-by: Zwane Mwaikambo Index: linux-2.6.12-rc2-mm3/arch/i386/kernel/cpu/proc.c =================================================================== RCS file: /home/cvsroot/linux-2.6.12-rc2-mm3/arch/i386/kernel/cpu/proc.c,v retrieving revision 1.1.1.1 diff -u -p -B -r1.1.1.1 proc.c --- linux-2.6.12-rc2-mm3/arch/i386/kernel/cpu/proc.c 17 Apr 2005 14:03:42 -0000 1.1.1.1 +++ linux-2.6.12-rc2-mm3/arch/i386/kernel/cpu/proc.c 27 Apr 2005 00:46:18 -0000 @@ -25,7 +25,7 @@ static int show_cpuinfo(struct seq_file "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe", /* AMD-defined */ - "pni", NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL, NULL, NULL, NULL, "mp", "nx", NULL, "mmxext", NULL, NULL, "fxsr_opt", NULL, NULL, NULL, "lm", "3dnowext", "3dnow", Index: linux-2.6.12-rc2-mm3/arch/x86_64/kernel/setup.c =================================================================== RCS file: /home/cvsroot/linux-2.6.12-rc2-mm3/arch/x86_64/kernel/setup.c,v retrieving revision 1.1.1.1 diff -u -p -B -r1.1.1.1 setup.c --- linux-2.6.12-rc2-mm3/arch/x86_64/kernel/setup.c 17 Apr 2005 14:03:51 -0000 1.1.1.1 +++ linux-2.6.12-rc2-mm3/arch/x86_64/kernel/setup.c 27 Apr 2005 00:46:31 -0000 @@ -1103,7 +1103,7 @@ static int show_cpuinfo(struct seq_file "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", NULL, /* AMD-defined */ - "pni", NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "nx", NULL, "mmxext", NULL, NULL, "fxsr_opt", NULL, NULL, NULL, "lm", "3dnowext", "3dnow", - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/