-
/*
* Routines to indentify additional cpu features that are scattered in
* cpuid space.
*/
-
#include <linux/cpu.h>
+#include <asm/pat.h>
#include <asm/processor.h>
struct cpuid_bit {
set_cpu_cap(c, cb->feature);
}
}
+
+#ifdef CONFIG_X86_PAT
+void __cpuinit validate_pat_support(struct cpuinfo_x86 *c)
+{
+ if (!cpu_has_pat)
+ pat_disable("PAT not supported by CPU.");
+
+ switch (c->x86_vendor) {
+ 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;
+ }
+
+ pat_disable("PAT disabled. Not yet verified on this CPU type.");
+}
+#endif