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Commit 1d3fbbf9 authored by Andi Kleen's avatar Andi Kleen Committed by Linus Torvalds
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[PATCH] x86-64: Don't trust boot_cpu_id in the mptable. 



It could be wrong for kexec or other cases. Read it from
the CPU instead.

Signed-off-by: default avatarMurali <muralim@in.ibm.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 8c566ef5

arch/x86_64/kernel/apic.c

+1 −2
Original line number Original line Diff line number Diff line
@@ -622,7 +622,6 @@ void __init init_apic_mappings(void) 
	 * Fetch the APIC ID of the BSP in case we have a

	 * Fetch the APIC ID of the BSP in case we have a

	 * default configuration (or the MP table is broken).

	 * default configuration (or the MP table is broken).

	 */

	 */

	if (boot_cpu_id == -1U)

	boot_cpu_id = GET_APIC_ID(apic_read(APIC_ID));

	boot_cpu_id = GET_APIC_ID(apic_read(APIC_ID));





#ifdef CONFIG_X86_IO_APIC

#ifdef CONFIG_X86_IO_APIC