x86: fix APIC related bootup crash on Athlon XP CPUs

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warmbloodedcreature@gmail.com reported that an APIC-enabled
Asus a7v8x-x with an Athlon XP reboots early in the bootup:

   http://bugzilla.kernel.org/show_bug.cgi?id=8723

after a long marathon of spontaneous-reboot debugging, it turns
out to be caused by sync_Arb_ids(). AMD CPUs never really needed
this sequence anyway, so just return early if we meet an AMD CPU.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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This commit is contained in:

Ingo Molnar 2007-11-26 20:42:20 +01:00

parent 52bfb36050

commit f44d9efd35

1 changed files with 1 additions and 1 deletions

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arch/x86/kernel/apic_32.c

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