> > > > > > Current MM: > > 1. drm_gem_cma_object, only support contiguous memory > > Please note that drm_gem_cma_object only looks at memory after the MMU > has done the mapping. If you have a good IOMMU driver that registers > correctly the dma_ops then you can allocate memory from anywhere and > still import it into the lima driver via drm_gem_cma_prime_import_sg_ > table() > hook attached to the gem_prime_import_sg_table. > Thanks, good to know this. But some Mali400/450 SoC doesn't have IOMMU at all, so I can't rely on it.
Regards, Qiang > > > 3. buffer is not really allocated when GEM_CREATE, but in CPU > > page fault handler and task submit buffer validation which make > > sure no GPU page fault > > 4. in shrinker handler, free un-used page in the pool, if still not > > enough, swap some idle buffer to disk > > > > 3&4 apply to both dma_alloc buffer and alloc_page buffer. > > > > Thanks, > > Qiang > > > _______________________________________________ > > dri-devel mailing list > > dri-devel@lists.freedesktop.org > > https://lists.freedesktop.org/mailman/listinfo/dri-devel > > > -- > /`\ > / : | > _.._ | '/ > /` \ | / > | .-._ '-"` ( > |_/ / o o\ > | == () == > \ -- / ______________________________ > ________ > / ---<_ ________| > |_______ > | \\ \ | I would like to fix the world but > | / > | | \\__ \ | no one gives me the source code. > | / > / ; |.__) / |______________________________________| > \ > (_/.-. ; /__________) > (_________\ > { `| \_/ > '-\ / | > | / | > / \ '-. > \__|-----' >
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