From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: [PATCH RFC 1/2] linux/vnuma: vnuma support for pv guest Date: Thu, 29 Aug 2013 10:07:38 -0400 Message-ID: <20130829140738.GA21672@konrad-lan.dumpdata.com> References: <1377593580-10040-1-git-send-email-ufimtseva@gmail.com> <1377593580-10040-2-git-send-email-ufimtseva@gmail.com> <20130827143335.GG3725@phenom.dumpdata.com> <1377731535.5255.60.camel@Abyss> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1377731535.5255.60.camel@Abyss> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Dario Faggioli Cc: Elena Ufimtseva , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On Thu, Aug 29, 2013 at 01:12:15AM +0200, Dario Faggioli wrote: > On mar, 2013-08-27 at 10:33 -0400, Konrad Rzeszutek Wilk wrote: > > Unfortunatly that won't happen if you boot this under dom0. It will > > find on some AMD machines the AMD Northbridge and try to scan that. > > And blow up. > > > Well, perhaps this was not evident enough in Elena's mails and patches, > but her current target is actually DomU. :-P > > However, that's only because we're proceeding in steps, so yes, once > DomU will be working, Dom0 will become the target, and we'll have to > start caring about not making things explode! :-O > > > If you look at the git commit that did the 'numa = 0' you will see > > the backstory. > > > That's something interesting to look at... I remember having seen that > discussion but not the details. I'll check when back from vacation. > > > I think part of enablement of ' numa = 1' is to wrap it with > > > > if (xen_initial_domain() && xen_supports_this_hypercall()) > > numa = 1; > > > > in the #2 patch. > > > Mmm... Did you mean '!xen_initial_domain()' ? Or is it me that did not > understand your comment about Dom0 above? For right now '!' would suffice. > > In case you did mean '!', again, this would be fine for now, since the > target is DomUs. At the point when we will start chasing Dom0, it would > be interesting to find a solution to this issue... :-/ > > Anyway, thanks for pointing this out. > > Regards, > Dario > > -- > <> (Raistlin Majere) > ----------------------------------------------------------------- > Dario Faggioli, Ph.D, http://about.me/dario.faggioli > Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) >