Messages in this thread Patch in this message | | | Date | Thu, 17 Jan 2008 13:36:13 +0100 | From | Andi Kleen <> | Subject | [PATCH] Enable PAT for more AMD CPUs |
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I checked some K7 errata files and couldn't find anything related to PAT. Also for Fam10h and 11h it should be definitely enabled.
Enable PAT for all AMD CPUs >= 6, which is K7 and newer.
Signed-off-by: Andi Kleen <ak@suse.de>
Index: linux/arch/x86/mm/pat.c =================================================================== --- linux.orig/arch/x86/mm/pat.c +++ linux/arch/x86/mm/pat.c @@ -49,7 +49,7 @@ static int pat_known_cpu(void) return cpu_has_pat; if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD && - (boot_cpu_data.x86 == 0xF)) + (boot_cpu_data.x86 >= 6)) return cpu_has_pat; return 0;
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