> I don't think so. > We are not doing vram yet in the TTM code, but I think a general > "eviction" would consist of > > 1) locking mmap_sems for all processes mapping the buffer. > 2) zap the page table. Any attempt to access will be blocked by > mmap_sem in nopage(). > 3) Copy contents from vram to system using either PCI SG or > video-><blit>->AGP-><flip>->system. > 4) Wait for completion. > 5) release the mmap sem. The page table will be refilled using > nopage().
On Cell, for SPU mappings, we don't scan through all processes mapping it, we use umap_mapping_range() which does it. However, after double-checking, i have some doubts about the locking so I'm trying to clarify that and I'll come back to you wether it's actually a viable solution or not. Ben. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
