Messages in this thread | | | Date | Fri, 17 Jan 2020 19:47:20 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/cpu: remove redundant cpu_detect_cache_sizes |
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On Wed, Jan 15, 2020 at 04:00:57PM +0800, Tony W Wang-oc wrote: > Before call cpu_detect_cache_sizes get l2size from CPUID.80000006, > these CPUs have called init_intel_cacheinfo get l2size/l3size from > CPUID.4.
Questions:
* Does CPUID(4) give the same result as CPUID(80000006) on those CPUs?
* cpu_detect_cache_sizes() sets c->x86_tlbsize while init_intel_cacheinfo() would set it only when it calls the former function - cpu_detect_cache_sizes() - at the end:
if (!l2) cpu_detect_cache_sizes(c);
Does that happen on those CPUs?
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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