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[PATCH] x86-64: Don't trust boot_cpu_id in the mptable.

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

Signed-off-by: Murali <muralim@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-09-12 18:49:24 +02:00 • committed by Linus Torvalds
parent 8c566ef5f3
commit 1d3fbbf9fe
1 changed files with 1 additions and 2 deletions
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3
arch/x86_64/kernel/apic.c
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@ -622,8 +622,7 @@ 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
{ {