--- linux-2.4.25-rc3/arch/x86_64/kernel/pci-gart.c.orig	2004-02-17 15:21:03.000000000 -0500
+++ linux-2.4.25-rc3/arch/x86_64/kernel/pci-gart.c	2004-02-17 15:23:20.000000000 -0500
@@ -220,7 +220,7 @@ void pci_free_consistent(struct pci_dev 
 	unsigned long iommu_page;
 
 	size = round_up(size, PAGE_SIZE); 
-	if (bus >= iommu_bus_base && bus <= iommu_bus_base + iommu_size) { 
+	if (bus >= iommu_bus_base && bus < iommu_bus_base + iommu_size) { 
 		unsigned pages = size >> PAGE_SHIFT;
 		iommu_page = (bus - iommu_bus_base) >> PAGE_SHIFT;
 		vaddr = __va(GPTE_DECODE(iommu_gatt_base[iommu_page]));
@@ -353,7 +353,7 @@ void pci_unmap_single(struct pci_dev *hw
 	unsigned long iommu_page; 
 	int npages;
 	if (dma_addr < iommu_bus_base + EMERGENCY_PAGES*PAGE_SIZE || 
-	    dma_addr > iommu_bus_base + iommu_size)
+	    dma_addr >= iommu_bus_base + iommu_size)
 		return;
 	iommu_page = (dma_addr - iommu_bus_base)>>PAGE_SHIFT;	
 	npages = round_up(size + (dma_addr & ~PAGE_MASK), PAGE_SIZE) >> PAGE_SHIFT;