Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754025AbYKFJpg (ORCPT ); Thu, 6 Nov 2008 04:45:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753325AbYKFJpY (ORCPT ); Thu, 6 Nov 2008 04:45:24 -0500 Received: from mx2.redhat.com ([66.187.237.31]:53967 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753210AbYKFJpW (ORCPT ); Thu, 6 Nov 2008 04:45:22 -0500 Message-ID: <4912BC86.8050607@redhat.com> Date: Thu, 06 Nov 2008 11:44:38 +0200 From: Avi Kivity User-Agent: Thunderbird 2.0.0.16 (X11/20080723) MIME-Version: 1.0 To: "Eric W. Biederman" CC: Eduardo Habkost , Ingo Molnar , Simon Horman , Andrew Morton , Vivek Goyal , Haren Myneni , Andrey Borzenkov , mingo@redhat.com, "Rafael J. Wysocki" , kexec@lists.infradead.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 15/16] kvm: x86: set kdump virt_disable function on initialization References: <1225810364-8990-1-git-send-email-ehabkost@redhat.com> <1225810364-8990-16-git-send-email-ehabkost@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 810 Lines: 25 Eric W. Biederman wrote: >> >> + r = set_virt_disable_func(crash_hardware_disable); >> > > Can we make this say: > set_virt_disable_func(kvm_x86_ops->crash_hardware_disable); > > So we can avoid going through 2 levels of function pointers? > I find that a little scary in code that might be running > at the edge of stack overflow. > Actually, with scheduling disabled we can overflow the stack as much as we like. It will reduce the quality of the dump, but everything ought to work. -- error compiling committee.c: too many arguments to function -- 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/