Commit 119bff8a authored Jun 15, 2018 by Borislav Petkov Committed by Thomas Gleixner Jun 21, 2018

x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info



Old code used to check whether CPUID ext max level is >= 0x80000008 because
that last leaf contains the number of cores of the physical CPU.  The three
functions called there now do not depend on that leaf anymore so the check
can go.

Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>

parent 1910ad56

arch/x86/kernel/cpu/amd.c

+3 −6

Original line number	Diff line number	Diff line
		@@ -848,12 +848,9 @@ static void init_amd(struct cpuinfo_x86 *c)

		cpu_detect_cache_sizes(c);

		/* Multi core CPU? */
		if (c->extended_cpuid_level >= 0x80000008) {
		amd_detect_cmp(c);
		amd_get_topology(c);
		srat_detect_node(c);
		}

		init_amd_cacheinfo(c);

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