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authorAndi Kleen <ak@suse.de>2008-02-04 16:48:08 +0100
committerIngo Molnar <mingo@elte.hu>2008-02-04 16:48:08 +0100
commit28d6ee41a6ff8139e442af2dc55928bfbb475586 (patch)
treed72d7143b857fc697956a0d5cf0fd69e13baf7fd
parent64f351d197d9ae8ad9624998afa8ee18e696ca44 (diff)
downloadop-kernel-dev-28d6ee41a6ff8139e442af2dc55928bfbb475586.zip
op-kernel-dev-28d6ee41a6ff8139e442af2dc55928bfbb475586.tar.gz
x86: switch pci-gart over to using set_memory_np() instead of clear_kernel_mapping()
pci-gart needs to unmap the IOMMU aperture to prevent cache corruptions. Switch this over to using set_memory_np() instead of clear_kernel_mapping(). Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/kernel/pci-gart_64.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index ae1d3d8..845cbec 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -731,7 +731,8 @@ void __init gart_iommu_init(void)
* the backing memory. The GART address is only used by PCI
* devices.
*/
- clear_kernel_mapping((unsigned long)__va(iommu_bus_base), iommu_size);
+ set_memory_np((unsigned long)__va(iommu_bus_base),
+ iommu_size >> PAGE_SHIFT);
/*
* Try to workaround a bug (thanks to BenH)
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