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Diffstat (limited to 'arch/x86_64/mm/init.c')
-rw-r--r--arch/x86_64/mm/init.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/mm/init.c b/arch/x86_64/mm/init.c
index 1faae5fc1c0..5337ca0ea7b 100644
--- a/arch/x86_64/mm/init.c
+++ b/arch/x86_64/mm/init.c
@@ -424,7 +424,7 @@ void __init mem_init(void)
#ifdef CONFIG_SWIOTLB
if (!iommu_aperture &&
- (end_pfn >= 0xffffffff>>PAGE_SHIFT || force_iommu))
+ ((end_pfn-1) >= 0xffffffff>>PAGE_SHIFT || force_iommu))
swiotlb = 1;
if (swiotlb)
swiotlb_init();