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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 10:28:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 10:28:17 -0700 |
| commit | 57b1494d2ba544c62673234da6115c21fac27ffc (patch) | |
| tree | 34f91f3187805fa034f8e63966d471ba2498d148 /arch/x86/kernel/pci-dma.c | |
| parent | 9fe3b64be3dc8313e9fa87255f169c608d074cbd (diff) | |
| parent | 8978b74253280d59e97cf49a3ec2c0cbccd5b801 (diff) | |
| download | linux-57b1494d2ba544c62673234da6115c21fac27ffc.tar.bz2 | |
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
generic, x86: fix add iommu_num_pages helper function
x86: remove stray <6> in BogoMIPS printk
x86: move dma32_reserve_bootmem() after reserve_crashkernel()
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 8dbffb846de9..87d4d6964ec2 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 /* |