From patchwork Wed Oct 28 09:20:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Beulich X-Patchwork-Id: 11862629 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A0D656A2 for ; Wed, 28 Oct 2020 09:21:27 +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 5B65C24691 for ; Wed, 28 Oct 2020 09:21:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="rFAfa3Uc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B65C24691 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.13416.34022 (Exim 4.92) (envelope-from ) id 1kXhdE-00053w-0d; Wed, 28 Oct 2020 09:20:36 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 13416.34022; Wed, 28 Oct 2020 09:20:35 +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 1kXhdD-00053p-U3; Wed, 28 Oct 2020 09:20:35 +0000 Received: by outflank-mailman (input) for mailman id 13416; Wed, 28 Oct 2020 09:20:35 +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 1kXhdD-00053k-Gh for xen-devel@lists.xenproject.org; Wed, 28 Oct 2020 09:20:35 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 87249370-37f1-4a88-a3c4-122a90584149; Wed, 28 Oct 2020 09:20:34 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 5A1FFAE55; Wed, 28 Oct 2020 09:20:33 +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 1kXhdD-00053k-Gh for xen-devel@lists.xenproject.org; Wed, 28 Oct 2020 09:20:35 +0000 X-Inumbo-ID: 87249370-37f1-4a88-a3c4-122a90584149 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 87249370-37f1-4a88-a3c4-122a90584149; Wed, 28 Oct 2020 09:20:34 +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=1603876833; 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=lYdSBZ4GqDWpjsgCkyHXRTUKdyPlmdwYdDzfWbdn6vg=; b=rFAfa3UcQLC2ivGNOd3yK47deNhW+ZTM5tpdAdWtFGH/QMlCHq6fpSWwoWe6onLqAUrcMO nq9VylGNKl7mVXs6cjcurTZYhBb3KnRjobuQxsri5t3EnudUv5MpKhYh8UbmStHUK1sffN lXHPKGscCk1fan/zX996JhvpdrMripI= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 5A1FFAE55; Wed, 28 Oct 2020 09:20:33 +0000 (UTC) To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , Wei Liu , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , George Dunlap , Tim Deegan From: Jan Beulich Subject: [PATCH 0/5] x86/p2m: hook adjustments Message-ID: <29d30de1-2a8d-aee2-d3c3-331758766fc9@suse.com> Date: Wed, 28 Oct 2020 10:20:33 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 Content-Language: en-US This started out with me getting confused by the two write_p2m_entry() hooks we have - there really ought to be no more than one, or if two were absolutely needed they imo would better have distinct names. Other adjustment opportunities (and I hope they're improvements) were found while getting rid of that one unnecessary layer of indirect calls. 1: p2m: paging_write_p2m_entry() is a private function 2: p2m: collapse the two ->write_p2m_entry() hooks 3: p2m: suppress audit_p2m hook when possible 4: HAP: move nested-P2M flush calculations out of locked region 5: [RFC] p2m: split write_p2m_entry() hook Jan