Messages in this thread | | | Date | Mon, 12 Jan 2004 13:24:29 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [PATCH] Intel Alder IOAPIC fix |
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On Sun, 11 Jan 2004, James Bottomley wrote: > > The intel alder motherboard really dislikes the way the current kernel > reassigns all PCI resources. It exports 6 memory bars from its Extended > Express System Support Controller, but if the system touches any of > them, it disables the secondary IO-APIC. > > The system is bootable if you disable all IO-APICs apart from the > primary, but it does become a bit crowded in interrupt space. The patch > fixes the problem by adding a quirk to clear the first six memory bars.
What are the BAR contents? In particular, maybe the right fix is to add a flag to say "don't touch" - but leave the BAR contents there, so that the resource manager can actually see what the resources actually are..
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