Commit 542c6f6d authored by Committed by Dave AirlieBrowse files
drm/ttm: Fix ttm in-kernel copying of pages with non-standard caching attributes.
For x86 this affected highmem pages only, since they were always kmapped cache-coherent, and this is fixed using kmap_atomic_prot(). For other architectures that may not modify the linear kernel map we resort to vmap() for now, since kmap_atomic_prot() generally uses the linear kernel map for lowmem pages. This of course comes with a performance impact and should be optimized when possible. Signed-off-by: Thomas Hellstrom <email@example.com> Signed-off-by: Dave Airlie <firstname.lastname@example.org>
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