From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752688AbeBEIzs (ORCPT ); Mon, 5 Feb 2018 03:55:48 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:35609 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752199AbeBEIzk (ORCPT ); Mon, 5 Feb 2018 03:55:40 -0500 Date: Mon, 5 Feb 2018 09:55:26 +0100 From: Peter Zijlstra To: David Woodhouse Cc: Alan Cox , Linus Torvalds , Thomas Gleixner , KarimAllah Ahmed , sironi@amazon.de, the arch/x86 maintainers , KVM list , Paolo Bonzini , Linux Kernel Mailing List , Borislav Petkov Subject: Re: [PATCH] KVM: x86: Reduce retpoline performance impact in slot_handle_level_range() Message-ID: <20180205085526.GG2249@hirez.programming.kicks-ass.net> References: <1517583559-424-1-git-send-email-dwmw@amazon.co.uk> <1517599033.31953.71.camel@infradead.org> <20180202212321.5186c13c@alans-desktop> <1517669207.31953.120.camel@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1517669207.31953.120.camel@infradead.org> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Feb 03, 2018 at 02:46:47PM +0000, David Woodhouse wrote: > Yeah. I'm keen on being able to use something like alternatives to > *change* 'usualfunction' at runtime though. I suspect it'll be a win > for stuff like dma_ops. That shouldn't be too hard to implement.