Messages in this thread Patch in this message | | | From | Konrad Rzeszutek Wilk <> | Subject | [PATCH 12/19] swiotlb-xen: Make 'xen_swiotlb_map_sg_attrs' work. | Date | Tue, 22 Jun 2010 15:42:45 -0400 |
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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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