From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58997) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b4pGY-0005ZY-4g for qemu-devel@nongnu.org; Mon, 23 May 2016 08:47:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b4pGT-0003Y6-VN for qemu-devel@nongnu.org; Mon, 23 May 2016 08:47:25 -0400 Received: from mail-wm0-x236.google.com ([2a00:1450:400c:c09::236]:37242) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b4pGS-0003Xy-Lp for qemu-devel@nongnu.org; Mon, 23 May 2016 08:47:21 -0400 Received: by mail-wm0-x236.google.com with SMTP id z87so46940726wmh.0 for ; Mon, 23 May 2016 05:47:20 -0700 (PDT) References: <87a8jhdotl.fsf@linaro.org> From: Alex =?utf-8?Q?Benn=C3=A9e?= In-reply-to: Date: Mon, 23 May 2016 13:47:54 +0100 Message-ID: <878tz1djph.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Subject: Re: [Qemu-devel] Any topics for today's MTTCG sync-up call? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: alvise rigo Cc: MTTCG Devel , QEMU Developers , Mark Burton , KONRAD =?utf-8?B?RnLDqWTDqXJpYw==?= , Sergey Fedorov , "Emilio G. Cota" , Paolo Bonzini , Pranith Kumar alvise rigo writes: > Hi Alex, > > I finally solved the issue I had, the branch is working well as far as I > can say. > The work I will share, in addition to making the LL/SC work mttcg-aware, > extends the various TLB flushes calls with the query-based mechanism: the > requesting CPU queries the flushes to the target CPUs and wait them for > completion. > > Sorry for the delay, I have been quite busy. I just need to polish some > commits, than (this week) I will share the branch. Thanks for the update. It sounds like we don't need to add to that on the call. Anyone else have something they want to discuss? > > Best regards, > alvise > > On Mon, May 23, 2016 at 12:57 PM, Alex Bennée > wrote: > >> Hi, >> >> It's been a while since the last sync-up call. Have we got any topics to >> discuss today? >> >> Sergey and I (with a little Paolo) have spent some of last week delving >> into the locking hierarchy w.r.t to tb_lock vs mmap_lock to see if there >> is any simplification to be had. I'm not sure if this is a topic >> conducive to a phone call instead of the mailing list but if others want >> to discuss it we can add it as an agenda item. >> >> We also have a new member of the team. Pranith has joined as a GSoC >> student. He'll be looking at memory ordering with his first pass at the >> problem looking to solve the store-after-load issues which do show up on >> ARM-on-x86 (see my testcase). >> >> Alvise, is there any help you need with the LL/SC stuff? The MTTCG aware >> version has been taking some time so would it be worth sharing the >> issues you have hit with the group? >> >> Emilio, is there anything you want to add? I've been following the QHT >> stuff which is a really positive addition which my v3 base patches is >> based upon (making the hot-path non lock contended). Do you have >> anything in the works above that? >> >> Cheers, >> >> -- >> Alex Bennée >> -- Alex Bennée