Re: [PATCH] x86-64: disable the GART before allocate aperture

[Yinghai Lu]

On 6/22/07, Muli Ben-Yehuda <muli@xxxxxxxxxx> 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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