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Commit 2e8458df authored by Andreas Herrmann's avatar Andreas Herrmann Committed by H. Peter Anvin
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x86, cacheinfo: Make use of CPUID 0x8000001d for cache information on AMD 



Rely on CPUID 0x8000001d for cache information when AMD CPUID topology
extensions are available.

Signed-off-by: default avatarAndreas Herrmann <andreas.herrmann3@amd.com>
Link: http://lkml.kernel.org/r/20121019090049.GF26718@alberich


Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent 04a15418

arch/x86/kernel/cpu/intel_cacheinfo.c

+5 −1
Original line number Original line Diff line number Diff line
@@ -538,6 +538,10 @@ __cpuinit cpuid4_cache_lookup_regs(int index, 
	unsigned		edx;

	unsigned		edx;





	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {

	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {

		if (cpu_has_topoext)

			cpuid_count(0x8000001d, index, &eax.full,

				    &ebx.full, &ecx.full, &edx);

		else

			amd_cpuid4(index, &eax, &ebx, &ecx);

			amd_cpuid4(index, &eax, &ebx, &ecx);

		amd_init_l3_cache(this_leaf, index);

		amd_init_l3_cache(this_leaf, index);

	} else {

	} else {