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    SubjectRe: modular intel-agp does not work on my box
    Dave Jones wrote:
    > On Sat, Feb 23, 2008 at 12:03:55AM -0800, Andrew Morton wrote:
    >
    > > > > You are right without EDAC built , agp modular does work fine. I'm on 2.6.25-rc2-00477-g1a4c6be right now.
    > > > > So it is an EDAC bug ?
    > > >
    > > > No, it's a failing of the pci driver model. It currently doesn't
    > > > allow more than one driver to be bound to a single PCI device.
    > > > For multi-function devices like bridges, this means we see problems
    > > > like the one you mention.
    > >
    > > Well that sounds pretty bad. What will distros do about this?
    >
    > either
    > * ship both modular, and let the user decide which one he wants.

    If you do so you have to blacklist one by default because udev will magically load both.

    > * build just one of them (typically agp)
    > * build them both, and let the above bug happen

    Well the bug was not with both build into the kernel.
    CONFIG_EDAC=Y CONFIG_EDAC_<something>=m, CONFIG_AGP=m CONFIG_AGP_INTEL=m breaks agp already.

    > * build agp into the kernel, and edac modular, breaking edac
    > for a minority.

    What does happen if one builds both into the kernel ? ( eg: all the *_AGP* Y , and all the *_EDAC* y )

    Guessing no one of them will work ?

    >
    > > Is there something short-term-and-sleazy we can do to "fix" it?
    >
    > not that I'm aware of. I think Greg has been working on a long-term fix.
    >
    > Dave
    >

    Gabriel


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