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x86/swiotlb: add default swiotlb_arch_range_needs_mapping 

Xen will override these later on.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ian Campbell 2008-12-16 12:17:38 -08:00 committed by Ingo Molnar
parent 1d32251e84
commit a08636690d
1 changed files with 5 additions and 0 deletions
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5
arch/x86/kernel/pci-swiotlb_64.c
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@ -33,6 +33,11 @@ phys_addr_t swiotlb_bus_to_phys(dma_addr_t baddr)
return baddr;
}
int __weak swiotlb_arch_range_needs_mapping(void *ptr, size_t size)
{
return 0;
}
static dma_addr_t
swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
int direction)