From patchwork Tue Jan 5 13:07:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Beulich X-Patchwork-Id: 11998851 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=-7.3 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 B8384C433DB for ; Tue, 5 Jan 2021 13:07:29 +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 78A5722AAC for ; Tue, 5 Jan 2021 13:07:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 78A5722AAC Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine 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.61914.109206 (Exim 4.92) (envelope-from ) id 1kwm3P-0007hz-A4; Tue, 05 Jan 2021 13:07:15 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 61914.109206; Tue, 05 Jan 2021 13:07:15 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kwm3P-0007hq-2V; Tue, 05 Jan 2021 13:07:15 +0000 Received: by outflank-mailman (input) for mailman id 61914; Tue, 05 Jan 2021 13:07:14 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kwm3O-0007hl-7G for xen-devel@lists.xenproject.org; Tue, 05 Jan 2021 13:07:14 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id bbf8ef00-4663-445b-9290-92adeb918934; Tue, 05 Jan 2021 13:07:13 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 80639AD19; Tue, 5 Jan 2021 13:07:12 +0000 (UTC) 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" X-Inumbo-ID: bbf8ef00-4663-445b-9290-92adeb918934 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=1609852032; h=from:from:reply-to: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=xIV6PAyiiqI7qoLqPvz1Fmz8ZW8SvEHYY9+mtjguX7o=; b=JEiA/EsitSFp6S8hpQbQdvf+cSRV8H2OqyyRIrw5s9UMivjnjTcEF4bVv2XHVPBO8uc0Wn GFO/hdvv9UBiaAup2Mx8Qt2NAq+QMqBvprHFUiKmOBMUMMWV/LPSZfdAXn3lk7bLOgUuhf c/czuybBhNxKMF/M/KiYYpvRKlITGn8= From: Jan Beulich Subject: [PATCH v4 00/10] evtchn: (not so) recent XSAs follow-on Cc: Andrew Cooper , George Dunlap , Ian Jackson , Julien Grall , Wei Liu , Stefano Stabellini To: "xen-devel@lists.xenproject.org" Message-ID: Date: Tue, 5 Jan 2021 14:07:12 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 Content-Language: en-US These are grouped into a series largely because of their origin, not so much because there are heavy dependencies among them. Compared to v3, there are several a new patches (in particular the simultaneous locking of two domains' event locks gets done away with) and movement of a controversial one to the end. See also the individual patches. 1: use per-channel lock where possible 2: bind-interdomain doesn't need to hold both domains' event locks 3: convert domain event lock to an r/w one 4: don't call Xen consumer callback with per-channel lock held 5: closing of vIRQ-s doesn't require looping over all vCPU-s 6: slightly defer lock acquire where possible 7: add helper for port_is_valid() + evtchn_from_port() 8: closing of ports doesn't need to hold both domains' event locks 9: type adjustments 10: drop acquiring of per-channel lock from send_guest_{global,vcpu}_virq() Jan