On Fri, 22 Jun 2007 15:43:00 -0700
Yinghai Lu <[email protected]> wrote:
> Eric W. Biederman wrote:
> > The original design came from thinking about systems where using the iommu
> > was mandatory. I think we almost always reserve memory below 1G for the kexec
> > on panic kernel so it really shouldn't be an issue in that case. Except
> > we need to pass an option to force not using the iommu. I don't think
> > noiommu or swiotlb is going to make any real difference.
> >
> > So I'm totally in favor of turning off features if we don't need them and we
> > don't take a tremendous performance hit. (People get grumpy when writing
> > all of memory to disk takes completely unreasonable amounts of time).
>
>
> So you prefer to
> add diable_gart in shutdown or suspend func and let kexec to use swiotlb comand line?
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)
Alan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
