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| author | Ingo Molnar <mingo@elte.hu> | 2008-08-11 13:40:56 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-11 13:40:56 +0200 |
| commit | 251a169c69d1ff07cee7a9bb9fc4faff6b1d2ac3 (patch) | |
| tree | 3c20c3e080f276848f2ad67aadab44a5d64bfda9 /arch/x86/kernel/pci-dma.c | |
| parent | 6679ce6e5f519096612b480d255d9ca97be0c2be (diff) | |
| parent | 796aadeb1b2db9b5d463946766c5bbfd7717158c (diff) | |
Merge branch 'linus' into sched/urgent
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 8dbffb846de..87d4d6964ec 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -123,6 +123,14 @@ void __init pci_iommu_alloc(void) pci_swiotlb_init(); } + +unsigned long iommu_num_pages(unsigned long addr, unsigned long len) +{ + unsigned long size = roundup((addr & ~PAGE_MASK) + len, PAGE_SIZE); + + return size >> PAGE_SHIFT; +} +EXPORT_SYMBOL(iommu_num_pages); #endif /* |