From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C4E3C6778A for ; Mon, 9 Jul 2018 10:04:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3AAB22084A for ; Mon, 9 Jul 2018 10:04:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3AAB22084A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932481AbeGIKEF (ORCPT ); Mon, 9 Jul 2018 06:04:05 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:60349 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752914AbeGIKEE (ORCPT ); Mon, 9 Jul 2018 06:04:04 -0400 Received: from hsi-kbw-5-158-153-52.hsi19.kabel-badenwuerttemberg.de ([5.158.153.52] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1fcT1D-00030O-8H; Mon, 09 Jul 2018 12:03:43 +0200 Date: Mon, 9 Jul 2018 12:03:42 +0200 (CEST) From: Thomas Gleixner To: Peter Zijlstra cc: LKML , Paolo Bonzini , Radim Krcmar , Juergen Gross , Pavel Tatashin , steven.sistare@oracle.com, daniel.m.jordan@oracle.com, x86@kernel.org, kvm@vger.kernel.org Subject: Re: [patch 4/7] x86/kvmclock: Cleanup the code In-Reply-To: <20180709090514.GF2476@hirez.programming.kicks-ass.net> Message-ID: References: <20180706161307.733337643@linutronix.de> <20180706162049.585702951@linutronix.de> <20180709090514.GF2476@hirez.programming.kicks-ass.net> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 9 Jul 2018, Peter Zijlstra wrote: > On Fri, Jul 06, 2018 at 06:13:11PM +0200, Thomas Gleixner wrote: > > - native_write_msr(msr_kvm_wall_clock, low, high); > > + wrmsrl(msr_kvm_wall_clock, slow_virt_to_phys(&wall_clock)); > > Does it matter that you went from an explicit native WRMSR instruction > to a potentially paravirt MSR thing? Ah crap, that wants to be native_wrmsrl()