tree 29e7db613b53e42e32964a36aeb3b4b4d414b19d
parent 52bfb36050c8529d9031d2c2513b281a360922ec
author Ingo Molnar <mingo@elte.hu> 1196106140 +0100
committer Ingo Molnar <mingo@elte.hu> 1196106140 +0100

x86: fix APIC related bootup crash on Athlon XP CPUs

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>