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| author |   Christoph Hellwig <hch@lst.de> | 2021-03-01 08:44:27 +0100 |
|---|---|---|
| committer |   Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2021-03-17 00:33:52 +0000 |
| commit | 16bc75f3aa3963588b13b01f6dad589f85d9f733 (patch) | |
| tree | d63b6af55beb3993e58b12ca0eaa1348f3b3721f /drivers/xen | |
| parent | swiotlb: split swiotlb_tbl_sync_single (diff) | |
| download | linux-dev-16bc75f3aa3963588b13b01f6dad589f85d9f733.tar.xz linux-dev-16bc75f3aa3963588b13b01f6dad589f85d9f733.zip | |
xen-swiotlb: use is_swiotlb_buffer in is_xen_swiotlb_buffer
Use the is_swiotlb_buffer to check if a physical address is
a swiotlb buffer. This works because xen-swiotlb does use the
same buffer as the main swiotlb code, and xen_io_tlb_{start,end}
are just the addresses for it that went through phys_to_virt.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 4e8a4e14942a..bffb35993c9d 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -111,10 +111,8 @@ static int is_xen_swiotlb_buffer(struct device *dev, dma_addr_t dma_addr) * have the same virtual address as another address * in our domain. Therefore _only_ check address within our domain. */ - if (pfn_valid(PFN_DOWN(paddr))) { - return paddr >= virt_to_phys(xen_io_tlb_start) && - paddr < virt_to_phys(xen_io_tlb_end); - } + if (pfn_valid(PFN_DOWN(paddr))) + return is_swiotlb_buffer(paddr); return 0; } |