Messages in this thread | | | From | Jesse Barnes <> | Subject | Re: [PATCH 2.6.18] PCI: Turn pci_fixup_video into generic for embedded VGA | Date | Fri, 16 Mar 2007 11:42:39 -0700 |
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On Friday, March 16, 2007 10:20 am Bjorn Helgaas wrote: > Are there really ia64 machines where we need to use the option ROM > copy at 0xC0000? If so, is this documented somewhere? I couldn't > find any mention in DIG64, EFI, or internal HP architecture specs. > > If we do need to use it, ia64 has a bit of a problem because on some > boxes, the 0xC0000 memory supports only cacheable access, the VGA > frame buffer at 0xA0000 supports only uncacheable access, and the > usual ia64 ioremap mapping is a 16MB page that covers both.
Apparently Eichiro's machine needs it, and of course there are i386 and x86_64 machines that need it to, so it makes sense that it be generic.
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