Messages in this thread | | | Date | Fri, 22 Jun 2007 12:49:35 -0700 | From | Yinghai Lu <> | Subject | Re: [PATCH] x86-64: disable the GART before allocate aperture |
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Muli Ben-Yehuda 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? > GART is enabled by first kernel, and some driver is using that for DMA.
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