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| author | Petr Tesarik <petr.tesarik.ext@huawei.com> | 2023-08-01 08:23:57 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2023-08-01 18:02:09 +0200 |
| commit | 05ee774122bd4a2f298668d6d5fc9e7b685a5e31 (patch) | |
| tree | 7144d0ef02ca1d93c0355de1ad5fa8349dadd3db /drivers/xen | |
| parent | swiotlb: bail out of swiotlb_init_late() if swiotlb is already allocated (diff) | |
| download | linux-05ee774122bd4a2f298668d6d5fc9e7b685a5e31.tar.xz linux-05ee774122bd4a2f298668d6d5fc9e7b685a5e31.zip | |
swiotlb: make io_tlb_default_mem local to swiotlb.c
SWIOTLB implementation details should not be exposed to the rest of the
kernel. This will allow to make changes to the implementation without
modifying non-swiotlb code.
To avoid breaking existing users, provide helper functions for the few
required fields.
As a bonus, using a helper function to initialize struct device allows to
get rid of an #ifdef in driver core.
Signed-off-by: Petr Tesarik <petr.tesarik.ext@huawei.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 67aa74d20162..946bd56f0ac5 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -381,7 +381,7 @@ xen_swiotlb_sync_sg_for_device(struct device *dev, struct scatterlist *sgl, static int xen_swiotlb_dma_supported(struct device *hwdev, u64 mask) { - return xen_phys_to_dma(hwdev, io_tlb_default_mem.end - 1) <= mask; + return xen_phys_to_dma(hwdev, default_swiotlb_limit()) <= mask; } const struct dma_map_ops xen_swiotlb_dma_ops = { |