From 291be10fd7511101d44cf98166d049bd31bc7600 Mon Sep 17 00:00:00 2001 From: Julien Grall Date: Wed, 9 Sep 2015 15:17:33 +0100 Subject: xen/swiotlb: Pass addresses rather than frame numbers to xen_arch_need_swiotlb With 64KB page granularity support, the frame number will be different. It will be easier to modify the behavior in a single place rather than in each caller. Signed-off-by: Julien Grall Reviewed-by: Stefano Stabellini Signed-off-by: David Vrabel --- arch/arm/xen/mm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch/arm/xen') diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 6dd911d1f0ac..7b517e913762 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -138,9 +138,12 @@ void __xen_dma_sync_single_for_device(struct device *hwdev, } bool xen_arch_need_swiotlb(struct device *dev, - unsigned long pfn, - unsigned long bfn) + phys_addr_t phys, + dma_addr_t dev_addr) { + unsigned long pfn = PFN_DOWN(phys); + unsigned long bfn = PFN_DOWN(dev_addr); + return (!hypercall_cflush && (pfn != bfn) && !is_device_dma_coherent(dev)); } -- cgit v1.2.3