Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752261AbdIVNBs (ORCPT ); Fri, 22 Sep 2017 09:01:48 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:58204 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751898AbdIVNBq (ORCPT ); Fri, 22 Sep 2017 09:01:46 -0400 Date: Fri, 22 Sep 2017 15:01:41 +0200 From: Peter Zijlstra To: Marcelo Tosatti Cc: Konrad Rzeszutek Wilk , mingo@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner Subject: Re: [patch 3/3] x86: kvm guest side support for KVM_HC_RT_PRIO hypercall\ Message-ID: <20170922130141.tz6f4gktihmbhqli@hirez.programming.kicks-ass.net> References: <20170921113835.031375194@redhat.com> <20170921114039.466130276@redhat.com> <20170921133653.GO26248@char.us.oracle.com> <20170921140628.zliqlz7mrlqs5pzz@hirez.programming.kicks-ass.net> <20170922011039.GB20133@amt.cnet> <20170922100004.ydmaxvgpc2zx7j25@hirez.programming.kicks-ass.net> <20170922121640.GA29589@amt.cnet> <20170922123107.fjh2yfwnej73trim@hirez.programming.kicks-ass.net> <20170922124005.GA30393@amt.cnet> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170922124005.GA30393@amt.cnet> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 357 Lines: 17 On Fri, Sep 22, 2017 at 09:40:05AM -0300, Marcelo Tosatti wrote: > Are you arguing its invalid for the following application to execute on > housekeeping vcpu of a realtime system: > > void main(void) > { > > submit_IO(); > do { > computation(); > } while (!interrupted()); > } > > Really? No. Nobody cares about random crap tasks.