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    Subject>3G => iommu => suspend problems -- was Re: SB600 AHCI: Hard Disk Corruption
    Hi!

    > > iommu problem? Try it with mem=3G.
    >
    > YES! :-) How did you know?

    Guess how... I hit it myself.

    > So how are we going to get this fixed???

    Write a patch, submit it? ;-).

    Okay, I guess I should do the patch, but I can't test it easily. If
    you can do testing/some development, I guess I can try to cook up
    something.

    (But no, I'm not an IOMMU expert).

    > Should the IOMMU be reinitialized after resume? Or should the bios do it
    > but doesn't? ** On the m2a-vm, the "GART" seems to be used as iommu,
    > so... :-) ???

    It is a Linux bug. BIOS could be more helpful, but... this is a Linux
    problem.

    > I put some kernel message logs here:
    > http://zefir.freesitespace.net/dmesg/
    > One log without mem=4G will also be there shortly, where you will see
    > the messages concerning the iommu (which seems to be unused right
    > now).

    Yep, they are similar to what I see.

    > ???** Seems, the SB600 is not to blame - alas sorry for the subject.

    Subject is easy to change ;-).
    Pavel
    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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