From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Volkin, Bradley D" Subject: Re: [PATCH 00/13] Gen7 batch buffer command parser Date: Tue, 25 Mar 2014 12:46:37 -0700 Message-ID: <20140325194637.GA4292@bdvolkin-ubuntu-desktop> References: <1392747357-25703-1-git-send-email-bradley.d.volkin@intel.com> <87y5050w3q.fsf@intel.com> <20140325131536.GC26878@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 8CD606E172 for ; Tue, 25 Mar 2014 12:46:27 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20140325131536.GC26878@phenom.ffwll.local> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Daniel Vetter Cc: "intel-gfx@lists.freedesktop.org" List-Id: intel-gfx@lists.freedesktop.org On Tue, Mar 25, 2014 at 06:15:36AM -0700, Daniel Vetter wrote: > On Thu, Mar 20, 2014 at 04:43:05PM +0200, Jani Nikula wrote: > > > > Hi Bradley - > > > > Apologies for my procrastination with the review; I don't easily recall > > as tedious a review as the command and register tables. And I sure have > > reviewed a lot of miserable stuff in the past. > > > > Most infuriatingly, I did not find a single real bug in the code! > > > > I think we'll need to automate some things going forward, for example > > listing the non-conforming length encoding with Damien's tools for cross > > checking. > > > > There are a few subtle points we need to discuss (separate mails > > internally) but all in all this series is: > > > > Reviewed-by: Jani Nikula > > Ok, pulled this one in, thanks a lot for the patches&review. I think it's > time we start to move on with the next bits, the batch copy stuff seams > like a suitable piece. There's still issues with launching the entire > thing in the end, but we can start with the copy infrastructure. > > Open issues I see still: > > - The littel issue we're discussing internally. Like I've said that one is > blocking us and needs to be resolved before we can switch to enforcing > mode. > > - Secure batch dispatch is still fubar. I'm not sure that this will still impact us once we implement the batch copy step. I was only using the secure dispatch stuff because it was a convenient way to get the batch into GGTT. But with the copy step, we could just have separate code to do that. > > - CodingStyle says: Functions should be a) at most 3 indent levels b) at > most 3 ansi screens long (i.e. 75 lines). i915_parse_cmds violates both > metrics pretty deftly. I think a few refactoring patches to extract > helper functions and structure the flow a bit would be good. :) I'll start with a patch to move all of the actual checking logic into a separate function, with maybe an extra helper for the bitmask checks. That seems like it should cut the size down sufficiently. Brad > > Cheers, Daniel > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch