2017-09-09, 12:51
(2017-09-09, 04:40)smp1 Wrote: Hmm... if I build using a current default kernel 4.13 - HEVC works fine. But if I build with an older kernel 4.8.16 - HEVC does not work anymore. This did not happen with previous builds - till today I could easily downgrade the kernel and HEVC worked. Any ideas?
Yes. Latest hevc code makes use of updates to vcsm kernel driver to allow faster cache cleaning/invalidating/flushing.
If you don't have those features then hevc won't work.
You could try cherry picking any kernel commits that refer to vcsm and cache cleaning/invalidating/flushing.