Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754060Ab3JDJT6 (ORCPT ); Fri, 4 Oct 2013 05:19:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37717 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751043Ab3JDJTz (ORCPT ); Fri, 4 Oct 2013 05:19:55 -0400 Date: Fri, 4 Oct 2013 11:21:09 +0200 From: Alexander Gordeev To: David Laight Cc: Ben Hutchings , linux-mips@linux-mips.org, "VMware, Inc." , linux-nvme@lists.infradead.org, linux-ide@vger.kernel.org, linux-s390@vger.kernel.org, Andy King , linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org, x86@kernel.org, Ingo Molnar , linux-pci@vger.kernel.org, iss_storagedev@hp.com, linux-driver@qlogic.com, Tejun Heo , Bjorn Helgaas , Dan Williams , Jon Mason , Solarflare linux maintainers , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Ralf Baechle , e1000-devel@lists.sourceforge.net, Martin Schwidefsky , linux390@de.ibm.com, linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH RFC 00/77] Re-design MSI/MSI-X interrupts enablement pattern Message-ID: <20131004092108.GB4536@dhcp-26-207.brq.redhat.com> References: <1380840585.3419.50.camel@bwh-desktop.uk.level5networks.com> <20131004082920.GA4536@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: 920 Lines: 25 On Fri, Oct 04, 2013 at 09:31:49AM +0100, David Laight wrote: > > Mmmm.. I am not sure I am getting it. Could you please rephrase? > > One possibility is for drivers than can use a lot of interrupts to > request a minimum number initially and then request the additional > ones much later on. > That would make it less likely that none will be available for > devices/drivers that need them but are initialised later. It sounds as a whole new topic for me. Isn't it? Anyway, what prevents the above from being done with pci_enable_msix(nvec1) - pci_disable_msix() - pci_enable_msix(nvec2) where nvec1 < nvec2? > 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/