Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: [PATCH] x86-64: disable the GART before allocate aperture | Date | Fri, 22 Jun 2007 17:14:23 -0600 |
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Alan Cox <alan@lxorguk.ukuu.org.uk> writes:
> On Fri, 22 Jun 2007 15:57:08 -0700 > Yinghai Lu <Yinghai.Lu@Sun.COM> wrote: > >> Alan Cox wrote: >> >> > Don't disable it, just don't touch it or any of its mappings. Leave it >> > *alone*, and use swiotlb. That'll maximise the ability to recover stuff >> > from the kexec kernel (since for one you may want to dump the gart when a >> > 3d app goes kerblam) >> >> How about LinuxBIOS + Kernel ===> Final kernel path? >> someday EFI(PEI) + Kernel ===> Final kernel path need that too. >> >> or the normal kexec path still could have clean shutdown. > > The kexec path for kdump should be swiotlb and leave the GART alone as > you are dumping as much state as you can and leaving stuff as is when > possible. The new-kernel case you shut everything down so you can shut > down the GART in the old kernel and re-initialise it in the new one
Agreed.
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