linux-dev/include/drm/ttm/ttm_set_memory.h, branch linus/master

drm/ttm: move ttm_set_memory.h out of include

2020-10-07T12:10:18Z

This is not something drivers should use. Signed-off-by: Christian König Reviewed-by: Michael J. Ruhl Link: https://patchwork.freedesktop.org/patch/393430/

drm/ttm: stop dangerous caching attribute change

2020-09-23T13:21:05Z

When we swapout/in a BO we try to change the caching attributes of the pages before/after doing the copy. On x86 this is done by calling set_pages_uc(), set_memory_wc() or set_pages_wb() for not highmem pages to update the linear mapping of the page. On all other platforms we do exactly nothing. Now on x86 this is unnecessary because copy_highpage() will either create a temporary mapping of the page which is wb anyway and destroyed immediately again or use the linear mapping with the correct caching attributes. So stop this nonsense and just keep the caching as it is and return an error when a driver tries to change the caching of an already populated TT object. This is much more defensive since changing caching attributes is platform and driver specific and usually doesn't work after the page was initially allocated. Signed-off-by: Christian König Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/391293/

drm/ttm: remove nonsense AGP handling

2020-09-23T13:16:36Z

map_page_into_agp() and unmap_page_from_agp() are only defined on x86. On all other platforms they are defined as noops. So this code doesn't has any effect at all. Signed-off-by: Christian König Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/391292/

drm/ttm: Add ttm_set_pages_wc and ttm_set_pages_uc helper

2018-08-01T22:23:05Z

These two helpers will be used on set page caching. Reviewed-by: Christian König Signed-off-by: Huang Rui Signed-off-by: Alex Deucher

drm/ttm: add ttm_set_memory header (v2)

2018-07-27T19:59:52Z

This patch moves all non-x86 abstraction to the ttm_set_memory header. It is to make function calling more clearly. (v2): add ttm_ prefix. Suggested-by: Christian König Signed-off-by: Huang Rui Reviewed-by: Bas Nieuwenhuizen Reviewed-by: Christian König Signed-off-by: Alex Deucher