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    Subject[PATCH 12/19] swiotlb-xen: Make 'xen_swiotlb_map_sg_attrs' work.
    Date
    Refer to "swiotlb-xen: Make 'xen_swiotlb_[map|unmap]_page' work." for
    details why we want to use our own address translation mechanism.

    Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
    ---
    lib/swiotlb-xen.c | 5 +++--
    1 files changed, 3 insertions(+), 2 deletions(-)

    diff --git a/lib/swiotlb-xen.c b/lib/swiotlb-xen.c
    index ca6c537..d457f7e 100644
    --- a/lib/swiotlb-xen.c
    +++ b/lib/swiotlb-xen.c
    @@ -343,10 +343,11 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl,

    for_each_sg(sgl, sg, nelems, i) {
    phys_addr_t paddr = sg_phys(sg);
    - dma_addr_t dev_addr = phys_to_dma(hwdev, paddr);
    + dma_addr_t dev_addr = xen_phys_to_bus(hwdev, paddr);

    if (swiotlb_force ||
    - !dma_capable(hwdev, dev_addr, sg->length)) {
    + !dma_capable(hwdev, dev_addr, sg->length) ||
    + range_straddles_page_boundary(paddr, sg->length)) {
    void *map = xen_map_single(hwdev, sg_phys(sg),
    sg->length, dir);
    if (!map) {
    --
    1.7.0.1


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