Messages in this thread | | | Date | Fri, 22 Jun 2007 15:43:00 -0700 | From | Yinghai Lu <> | Subject | Re: [PATCH] x86-64: disable the GART before allocate aperture |
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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?
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