From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757535Ab2ERPvZ (ORCPT ); Fri, 18 May 2012 11:51:25 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:35277 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756910Ab2ERPvX (ORCPT ); Fri, 18 May 2012 11:51:23 -0400 Date: Fri, 18 May 2012 19:51:19 +0400 From: Cyrill Gorcunov To: Alexander Gordeev Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Suresh Siddha , Yinghai Lu Subject: Re: [PATCH 2/3] x86: x2apic/cluster: Make use of lowest priority delivery mode Message-ID: <20120518155119.GG8455@moon> References: <20120518102640.GB31517@dhcp-26-207.brq.redhat.com> <20120518144153.GD8455@moon> <20120518154236.GA23406@dhcp-26-207.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120518154236.GA23406@dhcp-26-207.brq.redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 18, 2012 at 05:42:37PM +0200, Alexander Gordeev wrote: > > Hi Alexander, > > > > I'm a bit confused, we do compose destination id from target cpumask > > and send one ipi per _cluster_ with all cpus belonging to this cluster > > OR'ed. So if my memory doesn't betray me all specified cpus in cluster > > should obtain this message. Thus I'm wondering where do you find that > > only one apic obtains ipi? (note i don't have the real physical > > machine with x2apic enabled handy to test, so please share > > the experience). > > Cyrill, > > This patchset is not about IPIs at all. It is about interrupts coming from > IO-APICs. Ah, you mean io-apic here. I'll try to find some time tonight/tomorrow-morning for review. Thanks! Cyrill