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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 5E77FC33C8C for ; Sun, 5 Jan 2020 10:43:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 30A47207FD for ; Sun, 5 Jan 2020 10:43:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="C7df1BCt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726422AbgAEKnA (ORCPT ); Sun, 5 Jan 2020 05:43:00 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:51951 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725930AbgAEKnA (ORCPT ); Sun, 5 Jan 2020 05:43:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1578220977; 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: in-reply-to:in-reply-to:references:references; bh=BRbZ0RjIa8H/cOxd2x24HFOzfU7e/RH05WrdITWM4vc=; b=C7df1BCtGqUInDjvodrgqMplmEJCuUR8w0GkNZlueClXKyUlKiK576HyQlvHFXzoVNzif4 DPUB23ePf0QZMvnAi1jtRNPXyolF53eDkAVKe29OJ5zASRIEV7+2xZ6dVSb6l2cdKd3Mph 630Y68RzH2awrMkNTkzHUmzeHXlSkvk= Received: from mail-qt1-f200.google.com (mail-qt1-f200.google.com [209.85.160.200]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-307-q9fdW6aaPeSh3lERlMIE-w-1; Sun, 05 Jan 2020 05:42:56 -0500 X-MC-Unique: q9fdW6aaPeSh3lERlMIE-w-1 Received: by mail-qt1-f200.google.com with SMTP id p12so32396036qtu.6 for ; Sun, 05 Jan 2020 02:42:56 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=BRbZ0RjIa8H/cOxd2x24HFOzfU7e/RH05WrdITWM4vc=; b=FWd00FnSpWqholdOxKJ3sq1Pr+scCopCu2wga5YsO9iCOxSik5/mIQhp7ZO+tYPgjy MaF7NHjL8A7s4p9rzNUxs9n1xF5O2TD+wmiTEeDDYEs4F04mlUEj3yCuP8R4S0ioDbDP gEGGE52qikoQYrdYkhHcktPyE8w094nJAUcIqlE/tekDmJAYGZyw9/QCDSjvx6Zs/wqo MgqoHGKWo/yAFOtdQo4VNQk17u5DkdObaBObyTq7gnFF/rIcAljA8a59suOVadc7zfJ1 RyY50e/AGZvLgSOGF4t2gyn2naFXHzb9d6JLeOc+XDJsQvNlvQyn5tuNhDjJkoQven2M 4M8w== X-Gm-Message-State: APjAAAXPRpyqye8VlYRpVmYoNzF3YZjhFrMWd+0saHYJ/UiF6ipiLHT2 9W7CnuBbx60nl/eTPVRFGZ4PwtWOwPDSfmNYWO4A6FlcwKPQrhmymUNgxSxrgTCabGhjhud6J/S Sra5of3nDRejsY5B485SZq/dU X-Received: by 2002:ac8:43d0:: with SMTP id w16mr72765883qtn.43.1578220975920; Sun, 05 Jan 2020 02:42:55 -0800 (PST) X-Google-Smtp-Source: APXvYqxj37eEGp0vK5+GAdvI9b+oNDJsVwzEDoaTsQeftbJEGASoWKbu6C/R5mfmWJzInC+HeiO7bA== X-Received: by 2002:ac8:43d0:: with SMTP id w16mr72765874qtn.43.1578220975732; Sun, 05 Jan 2020 02:42:55 -0800 (PST) Received: from redhat.com (bzq-79-183-34-164.red.bezeqint.net. [79.183.34.164]) by smtp.gmail.com with ESMTPSA id u7sm18701159qtg.13.2020.01.05.02.42.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jan 2020 02:42:54 -0800 (PST) Date: Sun, 5 Jan 2020 05:42:49 -0500 From: "Michael S. Tsirkin" To: "Liu, Jiang" Cc: Jason Wang , Zha Bin , linux-kernel@vger.kernel.org, slp@redhat.com, virtio-dev@lists.oasis-open.org, jing2.liu@intel.com, chao.p.peng@intel.com Subject: Re: [PATCH v1 2/2] virtio-mmio: add features for virtio-mmio specification version 3 Message-ID: <20200105054142-mutt-send-email-mst@kernel.org> References: <229e689d-10f1-2bfb-c393-14dfa9c78971@redhat.com> <0460F92A-3DF6-4F7A-903B-6434555577CC@linux.alibaba.com> <56703BDA-B7AE-4656-8061-85FD1A130597@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <56703BDA-B7AE-4656-8061-85FD1A130597@linux.alibaba.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 26, 2019 at 09:16:19PM +0800, Liu, Jiang wrote: > > 2) The mask and unmask control is missed > > > > > >> but the extension doesn’t support 3) because > >> we noticed that the Linux virtio subsystem doesn’t really make use of interrupt masking/unmasking. Linux uses masking/unmasking in order to migrate interrupts between CPUs. -- MST