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Commit ee863ba7 authored by Andreas Herrmann's avatar Andreas Herrmann Committed by Ingo Molnar
Browse files

x86: unconditionally enable PAT for AMD CPUs 



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

Signed-off-by: default avatarAndreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent c26421d0

arch/x86/kernel/cpu/addon_cpuid_features.c

+1 −4
Original line number Diff line number Diff line
@@ -54,14 +54,11 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c) 
void __cpuinit validate_pat_support(struct cpuinfo_x86 *c)

{

	switch (c->x86_vendor) {

	case X86_VENDOR_AMD:

		if (c->x86 >= 0xf && c->x86 <= 0x11)

			return;

		break;

	case X86_VENDOR_INTEL:

		if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15))

			return;

		break;

	case X86_VENDOR_AMD:

	case X86_VENDOR_CENTAUR:

	case X86_VENDOR_TRANSMETA:

		return;