On Wed, Oct 17, 2012 at 09:31:21AM -0700, Jesse Barnes wrote: > On Wed, 17 Oct 2012 12:09:54 +0100 > Chris Wilson <chris at chris-wilson.co.uk> wrote: > > > With the introduction of per-process GTT space, the hardware designers > > thought it wise to also limit the ability to write to MMIO space to only > > a "secure" batch buffer. The ability to rewrite registers is the only > > way to program the hardware to perform certain operations like scanline > > waits (required for tear-free windowed updates). So we either have a > > choice of adding an interface to perform those synchronized updates > > inside the kernel, or we permit certain processes the ability to write > > to the "safe" registers from within its command stream. This patch > > exposes the ability to submit a SECURE batch buffer to > > DRM_ROOT_ONLY|DRM_MASTER processes. > > > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk> > Yeah looks good. > > Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org> Merged, and upgraded Jesse's r-b to the full patch with the hsw changes - he wasn't on irc to deny it ;-). Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
