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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 4DDBCC43382 for ; Wed, 26 Sep 2018 15:17:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 122A22086E for ; Wed, 26 Sep 2018 15:17:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 122A22086E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com 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 S1728274AbeIZVak (ORCPT ); Wed, 26 Sep 2018 17:30:40 -0400 Received: from mga01.intel.com ([192.55.52.88]:30918 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727157AbeIZVak (ORCPT ); Wed, 26 Sep 2018 17:30:40 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Sep 2018 08:17:15 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,306,1534834800"; d="scan'208";a="86749793" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.55]) by orsmga003.jf.intel.com with ESMTP; 26 Sep 2018 08:17:11 -0700 Date: Wed, 26 Sep 2018 08:17:11 -0700 From: Sean Christopherson To: Vitaly Kuznetsov Cc: kvm@vger.kernel.org, Paolo Bonzini , Radim =?utf-8?B?S3LEjW3DocWZ?= , Jim Mattson , Liran Alon , linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 9/9] x86/kvm/mmu: check if MMU reconfiguration is needed in init_kvm_nested_mmu() Message-ID: <20180926151711.GK27433@linux.intel.com> References: <20180925175844.20277-1-vkuznets@redhat.com> <20180925175844.20277-10-vkuznets@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180925175844.20277-10-vkuznets@redhat.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 25, 2018 at 07:58:44PM +0200, Vitaly Kuznetsov wrote: > We don't use root page role for nested_mmu, however, optimizing out > re-initialization in case nothing changed is still valuable as this > is done for every nested vmentry. > > Signed-off-by: Vitaly Kuznetsov > --- Reviewed-by: Sean Christopherson