On 23.05.2016 14:47, Alex Bennée wrote: > > alvise rigo <a.r...@virtualopensystems.com> 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?
Hi, at some point in the past there was a set of performance benchmarks which were showing the improvements using mttcg, is there some update on that? Thanks, Claudio > >> >> Best regards, >> alvise >> >> On Mon, May 23, 2016 at 12:57 PM, Alex Bennée <alex.ben...@linaro.org> >> 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 >
