Alexander Duyck ee3f6ba896 swiotlb: Make io_tlb_overflow_buffer a physical address
This change makes it so that we can avoid virt_to_phys overhead when using the
io_tlb_overflow_buffer.  My original plan was to completely remove the value
and replace it with a constant but I had seen that there were recent patches
that stated this couldn't be done until all device drivers that depended on
that functionality be updated.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-10-30 09:32:06 -04:00
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