Commit 1910ad56 authored Jun 06, 2018 by Thomas Gleixner

x86/cpu/intel: Evaluate smp_num_siblings early



Make use of the new early detection function to initialize smp_num_siblings
on the boot cpu before the MP-Table or ACPI/MADT scan happens. That's
required for force disabling SMT.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Ingo Molnar <mingo@kernel.org>

parent 95f3d39c

arch/x86/kernel/cpu/intel.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -301,6 +301,13 @@ static void early_init_intel(struct cpuinfo_x86 *c)
		}

		check_mpx_erratum(c);

		/*
		* Get the number of SMT siblings early from the extended topology
		* leaf, if available. Otherwise try the legacy SMT detection.
		*/
		if (detect_extended_topology_early(c) < 0)
		detect_ht_early(c);
		}

		#ifdef CONFIG_X86_32

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