diff options
Diffstat (limited to 'arch/arm/xen/mm.c')
| -rw-r--r-- | arch/arm/xen/mm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index ab700e1e5922..28ebf3ecee4e 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -100,6 +100,13 @@ void __xen_dma_sync_single_for_device(struct device *hwdev, __xen_dma_page_cpu_to_dev(hwdev, handle, size, dir); } +bool xen_arch_need_swiotlb(struct device *dev, + unsigned long pfn, + unsigned long mfn) +{ + return ((pfn != mfn) && !is_device_dma_coherent(dev)); +} + int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, unsigned int address_bits, dma_addr_t *dma_handle) |