summaryrefslogtreecommitdiffstats
path: root/arch/x86_64/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86_64/kernel')
-rw-r--r--arch/x86_64/kernel/aperture.c3
-rw-r--r--arch/x86_64/kernel/io_apic.c3
-rw-r--r--arch/x86_64/kernel/pci-gart.c2
3 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86_64/kernel/aperture.c b/arch/x86_64/kernel/aperture.c
index c7f4fdd20f05..e4e2b7d01f89 100644
--- a/arch/x86_64/kernel/aperture.c
+++ b/arch/x86_64/kernel/aperture.c
@@ -23,6 +23,7 @@
#include <asm/io.h>
#include <asm/proto.h>
#include <asm/pci-direct.h>
+#include <asm/dma.h>
int iommu_aperture;
int iommu_aperture_disabled __initdata = 0;
@@ -247,7 +248,7 @@ void __init iommu_hole_init(void)
/* Got the aperture from the AGP bridge */
} else if (swiotlb && !valid_agp) {
/* Do nothing */
- } else if ((!no_iommu && end_pfn >= 0xffffffff>>PAGE_SHIFT) ||
+ } else if ((!no_iommu && end_pfn >= MAX_DMA32_PFN) ||
force_iommu ||
valid_agp ||
fallback_aper_force) {
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index bdc589924b10..83ea86e0633a 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -37,6 +37,7 @@
#include <asm/proto.h>
#include <asm/mach_apic.h>
#include <asm/acpi.h>
+#include <asm/dma.h>
#define __apicdebuginit __init
@@ -281,7 +282,7 @@ void __init check_ioapic(void)
switch (vendor) {
case PCI_VENDOR_ID_VIA:
#ifdef CONFIG_GART_IOMMU
- if ((end_pfn >= (0xffffffff>>PAGE_SHIFT) ||
+ if ((end_pfn > MAX_DMA32_PFN ||
force_iommu) &&
!iommu_aperture_allowed) {
printk(KERN_INFO
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index 2b865c90b041..116e00f1bb7b 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -804,7 +804,7 @@ static int __init pci_iommu_init(void)
}
if (no_iommu ||
- (!force_iommu && end_pfn < 0xffffffff>>PAGE_SHIFT) ||
+ (!force_iommu && (end_pfn-1) < 0xffffffff>>PAGE_SHIFT) ||
!iommu_aperture ||
(no_agp && init_k8_gatt(&info) < 0)) {
printk(KERN_INFO "PCI-DMA: Disabling IOMMU.\n");