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authorJulien Grall <julien.grall@citrix.com>2015-09-09 15:17:33 +0100
committerDavid Vrabel <david.vrabel@citrix.com>2015-10-23 14:20:43 +0100
commit291be10fd7511101d44cf98166d049bd31bc7600 (patch)
tree668ca1a692248892515894661ed129ef44f82825 /arch/arm/xen
parent250c9af3d831139317009eaebbe82e20d23a581f (diff)
downloadlinux-291be10fd7511101d44cf98166d049bd31bc7600.tar.bz2
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 <julien.grall@citrix.com> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'arch/arm/xen')
-rw-r--r--arch/arm/xen/mm.c7
1 files changed, 5 insertions, 2 deletions
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));
}