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    Subject[PATCH 1/4] iommu/amd: Finish TLB flush in amd_iommu_unmap()
    Date
    From: Joerg Roedel <jroedel@suse.de>

    The function only sends the flush command to the IOMMU(s),
    but does not wait for its completion when it returns. Fix
    that.

    Fixes: 601367d76bd1 ('x86/amd-iommu: Remove iommu_flush_domain function')
    Cc: stable@vger.kernel.org # >= 2.6.33
    Signed-off-by: Joerg Roedel <jroedel@suse.de>
    ---
    drivers/iommu/amd_iommu.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
    index cb7c531..3a702c4 100644
    --- a/drivers/iommu/amd_iommu.c
    +++ b/drivers/iommu/amd_iommu.c
    @@ -3046,6 +3046,7 @@ static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
    mutex_unlock(&domain->api_lock);

    domain_flush_tlb_pde(domain);
    + domain_flush_complete(domain);

    return unmap_size;
    }
    --
    2.7.4
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