On Tue, Oct 13, 2015 at 03:00:18PM +0100, Tvrtko Ursulin wrote: > > On 13/10/15 14:22, Chris Wilson wrote: > >Pinning a userptr onto the hardware raises interesting questions about > >the lifetime of such a surface as the framebuffer extends that life > >beyond the client's address space. That is the hardware will need to > >keep scanning out from the backing storage even after the client wants > >to remap its address space. As the hardware pins the backing storage, > >the userptr becomes invalid and this raises a WARN when the clients > >tries to unmap its address space. The situation can be even more > >complicated when the buffer is passed between processes, between a > >client and display server, where the lifetime and hardware access is > >even more confusing. Deny it. > > Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx> -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
