diff options
author | Colin Cross <ccross@android.com> | 2011-04-07 14:47:45 -0700 |
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committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:37:03 -0800 |
commit | 8044175af9e16ae5f315029e629f84f88e78d1d4 (patch) | |
tree | 2974dedc8f619dfd81c6be0b08fccfa2b65ecb8e /Kconfig | |
parent | a6fe57bb9aa543f85754470f0d4d7636933bde69 (diff) |
[ARM] mm: add memory type for inner-writeback
For streaming-style operations (e.g., software rendering of graphics
surfaces shared with non-coherent DMA devices), the cost of performing
L2 cache maintenance can exceed the benefit of having the larger cache
(this is particularly true for OUTER_CACHE configurations like the ARM
PL2x0).
This change uses the currently-unused mapping 5 (TEX[0]=1, C=0, B=1)
in the tex remapping tables as an inner-writeback-write-allocate, outer
non-cacheable memory type, so that this mapping will be available to
clients which will benefit from the reduced L2 maintenance.
Change-Id: Iaec3314a304eab2215100d991b1e880b676ac906
Signed-off-by: Gary King <gking@nvidia.com>
Conflicts:
arch/arm/include/asm/pgtable.h
arch/arm/mm/proc-v7.S
Diffstat (limited to 'Kconfig')
0 files changed, 0 insertions, 0 deletions