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    SubjectRe: 2.6.17-rc1-mm1
    On Wed, 2006-04-05 at 07:38, Luck, Tony wrote:
    > On Tue, Apr 04, 2006 at 01:45:04AM -0700, Andrew Morton wrote:
    > > - VGA on ia64 is broken - the screen comes up blank. But ia64 otherwise
    > > seems to work OK. I didn't have time to investigate.
    > Broken in base 2.6.17-rc1 too :-( VGA comes up and prints a
    > few messages, and then goes wonky and dies. Comparing
    > what I _think_ I saw with the dmesg output, it appears to
    > die here:

    The wild VGA comes from the patch which changed ioremap.

    Now ioremap would not remap memory to region 6 unless that memory is
    marked as EFI_MEMORY_UC by EFI.

    Unfortunately on the Tiger Machine, VGA ram base was marked as
    EFI_MEMORY_WB instead of EFI_MEMORY_UC...

    So you can see the problem disappear if change VGA_MAP_MEM to use

    But I am not quite sure if we can fully trust EFI on this attribute.

    Zou Nan hai
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      Last update: 2006-04-05 05:49    [W:0.020 / U:2.792 seconds]
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