diff options
| author | Andi Kleen <ak@suse.de> | 2007-02-13 13:26:24 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-02-13 13:26:24 +0100 |
| commit | 00edefae050c2c2d1e26fa9984f8f529fbc45989 (patch) | |
| tree | 048e9b69aa4907c41a02832dda9a035544ea04fc /arch | |
| parent | ffb6017563aa15f9a8cff9a30b861d42c2695894 (diff) | |
[PATCH] x86-64: Fix off by one error in IOMMU boundary checking
Should be harmless because there is normally no memory there, but
technically it was incorrect.
Pointed out by Leo Duran
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/kernel/pci-gart.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c index fc1960f1f243..030eb3753358 100644 --- a/arch/x86_64/kernel/pci-gart.c +++ b/arch/x86_64/kernel/pci-gart.c @@ -185,7 +185,7 @@ static void iommu_full(struct device *dev, size_t size, int dir) static inline int need_iommu(struct device *dev, unsigned long addr, size_t size) { u64 mask = *dev->dma_mask; - int high = addr + size >= mask; + int high = addr + size > mask; int mmu = high; if (force_iommu) mmu = 1; @@ -195,7 +195,7 @@ static inline int need_iommu(struct device *dev, unsigned long addr, size_t size static inline int nonforced_iommu(struct device *dev, unsigned long addr, size_t size) { u64 mask = *dev->dma_mask; - int high = addr + size >= mask; + int high = addr + size > mask; int mmu = high; return mmu; } |