[PATCH v10 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel

[Dave Young]

On 05/04/15 at 06:23pm, Joerg Roedel wrote:
> On Fri, Apr 24, 2015 at 04:49:57PM +0800, Dave Young wrote:
> > I'm more than happy to see this issue can be fixed in the patchset, I
> > do not agree to add the code there with such problems. OTOH, for now
> > seems there's no way to fix it.
> 
> And that's the point. We discuss this issue and possible solutions for
> years by now, and what ZhenHua implemented is what we agreed to be the
> best-effort on what we can do in the kdump case with IOMMU enabled.
> 
> Of course there are still failure scenarios left, but that is not
> different from systems without any IOMMU.

The failure is nothing different, but as I said in another reply the
difference is we could use corrupted data to possiblly cause more failure. 

Thanks
Dave