[GIT PULL] (swiotlb) stable/for-linus-3.8-rc0-tag

From: Konrad Rzeszutek Wilk
Date: Sun Dec 16 2012 - 12:40:10 EST

Hey Linus,

Please git pull the following tag:

git pull git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb.git stable/for-linus-3.8-rc0-tag

which has one feature in the SWIOTLB code. That is to remove
the multitude of phys_to_virt/virt_to_phys calls and instead
operate on the physical addresses instead of virtual in many
of the internal functions. This does provide a speed up in interrupt
handlers that do DMA operations and use SWIOTLB.

Please pull!

drivers/xen/swiotlb-xen.c | 25 ++--
include/linux/swiotlb.h | 20 ++--
lib/swiotlb.c | 269 +++++++++++++++++++++++----------------------
3 files changed, 163 insertions(+), 151 deletions(-)

Alexander Duyck (7):
swiotlb: Make io_tlb_end a physical address instead of a virtual one
swiotlb: Make io_tlb_start a physical address instead of a virtual one
swiotlb: Make io_tlb_overflow_buffer a physical address
swiotlb: Return physical addresses when calling swiotlb_tbl_map_single
swiotlb: Use physical addresses for swiotlb_tbl_unmap_single
swiotlb: Use physical addresses instead of virtual in swiotlb_tbl_sync_single
swiotlb: Do not export swiotlb_bounce since there are no external consumers

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