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[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