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    SubjectRe: [PATCH] x86-64: disable the GART before allocate aperture
    On 6/22/07, Muli Ben-Yehuda <muli@il.ibm.com> wrote:
    > On Fri, Jun 22, 2007 at 12:19:15PM -0700, Yinghai Lu wrote:
    > > [PATCH] x86-64: disable the GART before allocate aperture
    > >
    > > For K8 system: 4G RAM with memory hole remapping enabled, or more
    > > than 4G RAM installed. when mem is allocated for GART, it will do
    > > the memset for clear. and for kexec case, the first kernel already
    > > enable that, the memset in second kernel will cause the system
    > > restart. So disable that at first before we try to allocate mem for
    > > it.
    >
    > Why does the memset in the second kernel cause a system restart?

    the mem for aperture is still used by GART. or the translation is still enabled.

    YH
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