Re: [PATCH 0/2] Introduce iommu_commit() function

KyongHo Cho
2011-06-29T05:02:11Z

Hi.

On Fri, Jun 24, 2011 at 12:31 AM, Joerg Roedel <joerg.roedel@amd.com> wrote:
> It needs to be called whenever a some code changed a domain (either by
> attaching/detaching devices or by mapping/unmapping pages in
> the domain).

Do you mean we can invalidate IOTLB with this iommu_commit()?
We need to invalidate IOTLB without updating page table for some
optimized solutions.

If a device in one domain is moved to other domain, IOTLB of the
device must be invalidated
because it contains translation information of the previous domain.

Regards,
KyongHo Cho.