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    SubjectRe: x86 git tree broken (bisected)
    On Mon, Apr 14, 2008 at 2:16 AM, Ingo Molnar <mingo@elte.hu> wrote:
    >
    > * Yinghai Lu <yhlu.kernel@gmail.com> wrote:
    >
    >
    > > > Attached is dmesg output from current x86.git with
    > > > debug_gart_checking.patch applied.
    > >
    > > please test the final one ... ...
    > >
    > > You should get back 64M memory back.
    >
    > so basically with all the right patches applied, and GART set to 32MB in
    > the BIOS, Rafael should have more free RAM on his system than ever
    > before :-)

    Yes

    >
    > i've put all the patches into x86.git/latest (it's all uploaded already
    > as well), so that should give Rafael a one-stop shop to test it out. [i
    > have not applied the debug patch that changes the aperture test from
    > 32MB to 64MB, and it should be unnecessary as well]
    >
    > btw., Yinghai, should we perhaps add a WARN_ON() to those places where
    > we waste RAM (such as the "This costs you 64 MB of RAM" message) - so
    > that kerneloops.org can pick those warnings up? Maybe there are other
    > situations where we waste RAM, and people dont realize it.

    in Rafael case, just need to ask user to increase GART size in BIOS if
    more than 4G RAM installed ( or 4G installed with hardware memhole
    remapping enabled).

    if less than 4G installed, just take the BIOS setting with 32M

    YH


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