From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Hering Subject: Re: [PATCH] Flag events caused by foreign domains Date: Fri, 2 Dec 2011 20:43:44 +0100 Message-ID: <20111202194344.GA1773@aepfle.de> References: <2a4ec2e2ae36593aa74e.1322772973@xdev.gridcentric.ca> <20111202071148.GA23017@aepfle.de> <7ba95535823dd32cc2a73d78646059bc.squirrel@webmail.lagarcavilla.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <7ba95535823dd32cc2a73d78646059bc.squirrel@webmail.lagarcavilla.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Andres Lagar-Cavilla Cc: andres@gridcentric.ca, xen-devel@lists.xensource.com, tim@xen.org, keir.xen@gmail.com, adin@gridcentric.ca List-Id: xen-devel@lists.xenproject.org On Fri, Dec 02, Andres Lagar-Cavilla wrote: > > On Thu, Dec 01, Andres Lagar-Cavilla wrote: > > > >> Add a new flag for mem events, as consumers might need to discriminate > >> foreign domain-caused from guest-caused events. The vcpu field of an > >> event is bogus from a consumer p.o.v. for foreign domain-caused events. > > > > How is this supposed to be used? > We're just OR'ing an extra flag on existing events. Toolstacks can ignore > it, or use it to handle foreign events differently, or whatever. No new > events are generated, timings don't change etc. Thats obvious. > Is that your concern? I'm wondering wether it really achieves what you want, no stall in the ring buffer etc. Olaf