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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>