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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 D6EA2C4742C for ; Tue, 3 Nov 2020 10:55:15 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 67BDF223BF for ; Tue, 3 Nov 2020 10:55:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="KxhMsVlV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 67BDF223BF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.18223.43150 (Exim 4.92) (envelope-from ) id 1kZtxr-0004l5-6V; Tue, 03 Nov 2020 10:54:59 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 18223.43150; Tue, 03 Nov 2020 10:54:59 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kZtxr-0004ky-3U; Tue, 03 Nov 2020 10:54:59 +0000 Received: by outflank-mailman (input) for mailman id 18223; Tue, 03 Nov 2020 10:54:57 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kZtxp-0004kt-AE for xen-devel@lists.xenproject.org; Tue, 03 Nov 2020 10:54:57 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 3930e305-901e-4d5c-9c4b-75858e291101; Tue, 03 Nov 2020 10:54:55 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 4BFD6ACA3; Tue, 3 Nov 2020 10:54:55 +0000 (UTC) Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kZtxp-0004kt-AE for xen-devel@lists.xenproject.org; Tue, 03 Nov 2020 10:54:57 +0000 X-Inumbo-ID: 3930e305-901e-4d5c-9c4b-75858e291101 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 3930e305-901e-4d5c-9c4b-75858e291101; Tue, 03 Nov 2020 10:54:55 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1604400895; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=oV/mDKp+mMMwMLDcuxuCHfmSupqxXZf2vCXQnS4sp20=; b=KxhMsVlVWGe3m5z1HBJ6pWdybTdrSCA67i4+8zFNF+cb3KdKiqSotJlAjYctt8F6fWVPXF J5edqeKWycetFymAJ1QtlYUxM/Qjm9vIz0w6+22RVyURlnz0YieYY43qddMt8jwLf3KgM0 jQ5ZGyAGlhcBGRX5yi5aZ7KFfcjRr6o= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 4BFD6ACA3; Tue, 3 Nov 2020 10:54:55 +0000 (UTC) To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , George Dunlap From: Jan Beulich Subject: [PATCH 0/5] x86/PV: memory management consistency and minor relaxations Message-ID: <10a01f61-197b-7df4-192d-917fe135df70@suse.com> Date: Tue, 3 Nov 2020 11:54:55 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Especially the latter three patches provide only small possible gains, from all I can tell. I nevertheless wanted to put up the entire set for consideration. 1: consistently inline {,un}adjust_guest_le() 2: fold redundant calls to adjust_guest_le() 3: _PAGE_RW changes may take fast path of mod_l[234]_entry() 4: restrict TLB flushing after mod_l[234]_entry() 5: avoid TLB flushing after mod_l3_entry() Jan