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

    On Fri, Jun 24, 2011 at 12:31 AM, Joerg Roedel <> 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.

    KyongHo Cho.

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