From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755325Ab1AaNms (ORCPT ); Mon, 31 Jan 2011 08:42:48 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:48625 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752143Ab1AaNmr convert rfc822-to-8bit (ORCPT ); Mon, 31 Jan 2011 08:42:47 -0500 Subject: Re: [RFC -v7 PATCH 5/7] export pid symbols needed for kvm_vcpu_on_spin From: Peter Zijlstra To: Avi Kivity Cc: Rik van Riel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Srivatsa Vaddagiri , Mike Galbraith , Chris Wright , ttracy@redhat.com, "Nakajima, Jun" In-Reply-To: <4D46B88C.4000700@redhat.com> References: <20110126165657.2ddd2ac9@annuminas.surriel.com> <20110126172303.3d5184a7@annuminas.surriel.com> <1296474699.15234.396.camel@laptop> <4D46B88C.4000700@redhat.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Mon, 31 Jan 2011 14:43:35 +0100 Message-ID: <1296481415.26581.13.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2011-01-31 at 15:26 +0200, Avi Kivity wrote: > On 01/31/2011 01:51 PM, Peter Zijlstra wrote: > > On Wed, 2011-01-26 at 17:23 -0500, Rik van Riel wrote: > > > Export the symbols required for a race-free kvm_vcpu_on_spin. > > > > Avi, you asked for an example of why I hated KVM as a module :-) > > Why do you dislike exports so much? Because I hate modules [*], since we sadly cannot undo those, limiting the module interface is all we've got, and KVM is one that pushes the module interface further and further. Many people see an EXPORT as a acknowledgement that its OK to use the interface, even when its not. [*] they enable the binary junk thing.