intel-iommu: PMEN support

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Add support for protected memory enable bits by clearing them if they are
set at startup time.  Some future boot loaders or firmware could have this
bit set after it loads the kernel, and it needs to be cleared if DMA's are
going to happen effectively.

Signed-off-by: mark gross <mgross@intel.com>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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mark gross 2008-02-08 04:18:38 -08:00 • committed by Linus Torvalds

parent 2d3a4e3666

commit f8bab73515

2 changed files with 24 additions and 1 deletions

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21

drivers/pci/intel-iommu.c

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4

drivers/pci/intel-iommu.h

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