From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932548AbZD1LIs (ORCPT ); Tue, 28 Apr 2009 07:08:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932295AbZD1LIf (ORCPT ); Tue, 28 Apr 2009 07:08:35 -0400 Received: from mx2.redhat.com ([66.187.237.31]:44127 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932272AbZD1LIe (ORCPT ); Tue, 28 Apr 2009 07:08:34 -0400 Message-ID: <49F6E3B2.5010306@redhat.com> Date: Tue, 28 Apr 2009 14:08:34 +0300 From: Avi Kivity User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: Gregory Haskins CC: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, davidel@xmailserver.org Subject: Re: [KVM PATCH v2 2/2] kvm: add support for irqfd via eventfd-notification interface References: <20090424042142.1796.60756.stgit@dev.haskins.net> <20090424042518.1796.65593.stgit@dev.haskins.net> <49F572EF.4010909@redhat.com> <49F58A8C.7090808@novell.com> <49F58D75.7040304@redhat.com> <49F5B2DA.5060207@novell.com> <49F6CDFC.6000400@redhat.com> <49F6DB9D.3080501@novell.com> <49F6E1CA.1010106@redhat.com> <49F6E2BB.9070604@novell.com> <49F6E313.7020502@redhat.com> In-Reply-To: <49F6E313.7020502@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Avi Kivity wrote: >> >> So what is your proposal for such interface? >> >> > > ->write(). > Alternatively, a new fileop ->signal_event(), which would map to eventfd_signal() or irqfd_signal(). This would be defined to work in irq contexts. It may also be useful for uio interrupts. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic.