On Mon, Mar 21, 2016 at 8:40 AM, Hans Verkuil <hverkuil at xs4all.nl> wrote: >> + For correctness and optimal performance, it is always required to use >> + SYNC_START and SYNC_END before and after, respectively, when accessing >> the >> + mapped address. Userspace cannot on coherent access, even when there are > > "Userspace cannot on coherent access"? Do you mean "cannot do"? Sorry, the > meaning isn't clear to me.
"cannot rely on". I'll send out v2 asap (and let's hope the coffee works this time around). -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
