Commit bfef148f authored by José Roberto de Souza's avatar José Roberto de Souza
Browse files

drm/i915: Increase I915_PARAM_MMAP_GTT_VERSION version to indicate support for partial mmaps 



Commit 255fc170 ("drm/i915/gem: Calculate object page offset for partial memory mapping")
was the last patch of several patches fixing multiple partial mmaps.
But without a bump in I915_PARAM_MMAP_GTT_VERSION there is no clean
way for UMD to know if it can do multiple partial mmaps.

Fixes: 255fc170 ("drm/i915/gem: Calculate object page offset for partial memory mapping")
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Nirmoy Das <nirmoy.das@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
Reviewed-by: default avatarNirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306210827.171147-1-jose.souza@intel.com
parent cf58c943

drivers/gpu/drm/i915/gem/i915_gem_mman.c

+4 −1
Original line number Diff line number Diff line
@@ -164,6 +164,9 @@ static unsigned int tile_row_pages(const struct drm_i915_gem_object *obj) 
 * 4 - Support multiple fault handlers per object depending on object's

 *     backing storage (a.k.a. MMAP_OFFSET).

 *

 * 5 - Support multiple partial mmaps(mmap part of BO + unmap a offset, multiple

 *     times with different size and offset).

 *

 * Restrictions:

 *

 *  * snoopable objects cannot be accessed via the GTT. It can cause machine
@@ -191,7 +194,7 @@ static unsigned int tile_row_pages(const struct drm_i915_gem_object *obj) 
 */

int i915_gem_mmap_gtt_version(void)

{

	return 4;

	return 5;

}



static inline struct i915_gtt_view