Commit 3c3b73b6 authored by Zwane Mwaikambo's avatar Zwane Mwaikambo Committed by Linus Torvalds

[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: default avatarZwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2f1b3818
......@@ -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",
......
......@@ -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",
......
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