Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756822Ab3IZML2 (ORCPT ); Thu, 26 Sep 2013 08:11:28 -0400 Received: from mx1.redhat.com ([209.132.183.28]:9439 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755712Ab3IZML0 (ORCPT ); Thu, 26 Sep 2013 08:11:26 -0400 Date: Thu, 26 Sep 2013 14:13:25 +0200 From: Alexander Gordeev To: David Laight Cc: Tejun Heo , linux-pci@vger.kernel.org, Joerg Roedel , x86@kernel.org, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Jan Beulich , Bjorn Helgaas , linuxppc-dev@lists.ozlabs.org, Ingo Molnar Subject: Re: [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi_cap() interface Message-ID: <20130926121325.GC16774@dhcp-26-207.brq.redhat.com> References: <20130918165045.GB2353@dhcp-26-207.brq.redhat.com> <20130920082458.GA10507@dhcp-26-207.brq.redhat.com> <20130920122736.GD7630@mtj.dyndns.org> <20130925180220.GB26273@google.com> <20130925205804.GA21737@dhcp-26-207.brq.redhat.com> <20130925210016.GA8926@htj.dyndns.org> <20130926074646.GA16774@dhcp-26-207.brq.redhat.com> <20130926104548.GB16774@dhcp-26-207.brq.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Content-Length: 950 Lines: 26 On Thu, Sep 26, 2013 at 12:34:36PM +0100, David Laight wrote: > I was thinking that the first call would be done during driver probe > (assuming such a time exists) so that the subsystem could determine > how many interrupts all the drivers would like, so it can then > hand out a smaller number to some of the early drivers in order > to have some left to satisfy the minimum requirement of later > ones. > > So all it would do is sum the requirements of all the drivers. It is already implemented - please see commit 448e2ca ("powerpc/pseries: Implement a quota system for MSIs") All other archs do not have MSI vector space limitations. > David -- Regards, Alexander Gordeev agordeev@redhat.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/