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| author | Christoph Hellwig <hch@lst.de> | 2020-10-23 08:33:09 +0200 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2020-11-02 10:10:39 -0500 |
| commit | fc0021aa340af65a0a37d77be39e22aa886a6132 (patch) | |
| tree | bd61ef7411ff4461f8b540a7542d4f5b1e388094 /drivers/xen | |
| parent | e9696d259d0fb5d239e8c28ca41089838ea76d13 (diff) | |
| download | linux-stable-fc0021aa340af65a0a37d77be39e22aa886a6132.tar.gz linux-stable-fc0021aa340af65a0a37d77be39e22aa886a6132.tar.bz2 linux-stable-fc0021aa340af65a0a37d77be39e22aa886a6132.zip | |
swiotlb: remove the tbl_dma_addr argument to swiotlb_tbl_map_single
The tbl_dma_addr argument is used to check the DMA boundary for the
allocations, and thus needs to be a dma_addr_t. swiotlb-xen instead
passed a physical address, which could lead to incorrect results for
strange offsets. Fix this by removing the parameter entirely and hard
code the DMA address for io_tlb_start instead.
Fixes: 91ffe4ad534a ("swiotlb-xen: introduce phys_to_dma/dma_to_phys translations")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 71ce1b7a23d1..2b385c1b4a99 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -395,8 +395,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page, */ trace_swiotlb_bounced(dev, dev_addr, size, swiotlb_force); - map = swiotlb_tbl_map_single(dev, virt_to_phys(xen_io_tlb_start), - phys, size, size, dir, attrs); + map = swiotlb_tbl_map_single(dev, phys, size, size, dir, attrs); if (map == (phys_addr_t)DMA_MAPPING_ERROR) return DMA_MAPPING_ERROR; |