x86: do_boot_cpu - check if we have ESR register

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Impact: fix APIC IRQ irregularities on certain older boxes

We should touch the APIC ESR register if only we have it.

The patch fixes the problem mentioned by Max Kellermann:

	http://lkml.org/lkml/2008/10/17/147

Bisected-by: Max Kellermann <mk@cm4all.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
[ mingo@elte.hu: build fix ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Cyrill Gorcunov 2008-10-22 18:00:09 +04:00 • committed by Ingo Molnar

parent 8d433c407d

commit db96b0a0e4

1 changed files with 5 additions and 3 deletions

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arch/x86/kernel/smpboot.c

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