[PATCH] cpuid x87 bit on AMD falsely marked as PNI

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 <snipped> 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 <[email protected]> Cc: Andi Kleen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
josf · May 1, 2005 · 3c3b73b · 3c3b73b
1 parent 2f1b381
commit 3c3b73b
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/arch/i386/kernel/cpu/proc.c b/arch/i386/kernel/cpu/proc.c
@@ -25,7 +25,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	        "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",

diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
@@ -1076,7 +1076,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	        "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",