From 28d6ee41a6ff8139e442af2dc55928bfbb475586 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 4 Feb 2008 16:48:08 +0100 Subject: [PATCH] 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 Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/kernel/pci-gart_64.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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) -- 2.7.4