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| author | Rob Clark <robdclark@chromium.org> | 2025-06-29 13:13:01 -0700 |
|---|---|---|
| committer | Rob Clark <robin.clark@oss.qualcomm.com> | 2025-07-04 17:48:35 -0700 |
| commit | dbbde63c9e9d472743a88f975baac412ba93f29d (patch) | |
| tree | 6f79b6693e7a8d306dc3443315a55823d6f9bc3b /tools/perf/scripts/python | |
| parent | 2c7ad9925523f644fe808b243921ebd5c01590e5 (diff) | |
drm/msm: Add PRR support
Add PRR (Partial Resident Region) is a bypass address which make GPU
writes go to /dev/null and reads return zero. This is used to implement
vulkan sparse residency.
To support PRR/NULL mappings, we allocate a page to reserve a physical
address which we know will not be used as part of a GEM object, and
configure the SMMU to use this address for PRR/NULL mappings.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Tested-by: Antonino Maniscalco <antomani103@gmail.com>
Reviewed-by: Antonino Maniscalco <antomani103@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/661486/
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions