Kenji> The cause of this problem might be an wrong assumption that
Kenji> the 'start' member of resource structure for ioapic device
Kenji> has non-zero value if the resources are assigned by
Kenji> firmware. The 'start' member of ioapic device seems not to
Kenji> be set even though the resources were actually assigned to
Kenji> ioapic devices by firmware.
Kenji> I made a patch to fix this problem against
Kenji> 2.6.18-git18. This patch checks command register instead of
Kenji> checking 'start' member to see if the ioapic is already
Kenji> enabled by firmware. Unfortunately, I don't have any system
Kenji> to reproduce this problem. Could you please try it and let
Kenji> me know whether the problem is fixed? If the patch below
Kenji> fixes the problem, I'll resend it with description and
Kenji> Signed-off-by.
Yes, applying this patch makes everything work on the same SuperMicro
motherboard that breaks with Linus's current tree. Assuming this
doesn't break anything else, I think this should go upstream.
Thanks,
Roland
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