Messages in this thread | | | Subject | Re: The change "PCI: assign ioapic resource at hotplug" breaks my system | From | Roland Dreier <> | Date | Tue, 03 Oct 2006 10:51:55 -0700 |
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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.
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