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| author | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2021-08-13 16:43:31 +0200 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2021-08-25 16:05:47 +0200 |
| commit | 669076334bfa7915e6856cf49c6408a2ec07df7a (patch) | |
| tree | 63606a28faf8349b92064efee6c867f5c46b45db /drivers/gpu/drm/i915/gem | |
| parent | d8ac30fd479cf0f0b37c7f06b06b50c18f57c548 (diff) | |
| download | linux-669076334bfa7915e6856cf49c6408a2ec07df7a.tar.bz2 | |
drm/ttm, drm/i915: Update ttm_move_memcpy for async use
The buffer object argument to ttm_move_memcpy was only used to
determine whether the destination memory should be cleared only
or whether we should copy data. Replace it with a "clear" bool, and
update the callers.
The intention here is to be able to use ttm_move_memcpy() async under
a dma-fence as a fallback if an accelerated blit fails in a security-
critical path where data might leak if the blit is not properly
performed. For that purpose the bo is an unsuitable argument since
its relevant members might already have changed at call time.
Finally, update the ttm_move_memcpy kerneldoc that seems to have
ended up with a stale version.
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20210813144331.372957-3-thomas.hellstrom@linux.intel.com
Link: https://patchwork.freedesktop.org/patch/msgid/20210813144331.372957-3-thomas.hellstrom@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gem')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c index d07de18529ab..6995c66cbe21 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -518,7 +518,7 @@ static void __i915_ttm_move(struct ttm_buffer_object *bo, bool clear, obj->ttm.cached_io_st, src_reg->region.start); - ttm_move_memcpy(bo, dst_mem->num_pages, dst_iter, src_iter); + ttm_move_memcpy(clear, dst_mem->num_pages, dst_iter, src_iter); } } |