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    Subject[PATCH 4.9 15/39] iommu/amd: Finish TLB flush in amd_iommu_unmap()
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Joerg Roedel <jroedel@suse.de>

    commit ce76353f169a6471542d999baf3d29b121dce9c0 upstream.

    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')
    Signed-off-by: Joerg Roedel <jroedel@suse.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/iommu/amd_iommu.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/iommu/amd_iommu.c
    +++ b/drivers/iommu/amd_iommu.c
    @@ -3120,6 +3120,7 @@ static size_t amd_iommu_unmap(struct iom
    mutex_unlock(&domain->api_lock);

    domain_flush_tlb_pde(domain);
    + domain_flush_complete(domain);

    return unmap_size;
    }

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