From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 10/10] Introduce MSI message sending interface that bypass IRQ routing. Date: Sun, 09 Aug 2009 17:56:30 +0300 Message-ID: <4A7EE39E.40809@redhat.com> References: <1249821671-32356-1-git-send-email-gleb@redhat.com> <1249821671-32356-11-git-send-email-gleb@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Gleb Natapov Return-path: Received: from mx2.redhat.com ([66.187.237.31]:48158 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750785AbZHIOuf (ORCPT ); Sun, 9 Aug 2009 10:50:35 -0400 Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26]) by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n79EoaDM029263 for ; Sun, 9 Aug 2009 10:50:36 -0400 In-Reply-To: <1249821671-32356-11-git-send-email-gleb@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 08/09/2009 03:41 PM, Gleb Natapov wrote: > Sending of MSI using IRQ routing is an artificial concept and potentially > big number of MSIs (2048 per device) make it also inefficient. This > patch adds an interface to inject MSI messages from userspace to lapic > logic directly. The patch also reduces the maximum number of IRQ routing > entries to 128 since MSIs will no longer go there and 128 entries cover > 5 ioapics and this ought to be enough for anybody. > In the future many MSIs will be triggered via irqfds, and those require irq routing. -- error compiling committee.c: too many arguments to function