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x86: unconditionally enable PAT for AMD CPUs

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If PAT support is advertised it should just work. No errata known.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Andreas Herrmann
2008-06-10 16:04:30 +02:00
committed by Ingo Molnar
parent c26421d019
commit ee863ba7ab
1 changed files with 1 additions and 4 deletions
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5
arch/x86/kernel/cpu/addon_cpuid_features.c
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@@ -54,14 +54,11 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
void __cpuinit validate_pat_support(struct cpuinfo_x86 *c) void __cpuinit validate_pat_support(struct cpuinfo_x86 *c)
{ {
switch (c->x86_vendor) { switch (c->x86_vendor) {
case X86_VENDOR_AMD:
if (c->x86 >= 0xf && c->x86 <= 0x11)
return;
break;
case X86_VENDOR_INTEL: case X86_VENDOR_INTEL:
if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15)) if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))
return; return;
break; break;
case X86_VENDOR_AMD:
case X86_VENDOR_CENTAUR: case X86_VENDOR_CENTAUR:
case X86_VENDOR_TRANSMETA: case X86_VENDOR_TRANSMETA:
return; return;