Re: [PATCH v9 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel

Joerg Roedel
2015-05-05T16:10:07Z

On Tue, May 05, 2015 at 02:09:31PM +0800, Dave Young wrote:
> I agree that we can do nothing with the old corrupted data, but I worry
> about the future corruption after using the old corrupted data. I wonder
> if we can mark all the oldmem as readonly so that we can lower the risk.
> Is it resonable?

Do you mean marking it read-only for the devices? That will very likely
cause DMAR faults, re-introducing the problem this patch-set tries to
fix.

Joerg