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 Received: from ws5-mx01.kavi.com (ws5-mx01.kavi.com [34.193.7.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 23FD1CA0EC3 for ; Tue, 12 Sep 2023 13:05:35 +0000 (UTC) Received: from lists.oasis-open.org (oasis.ws5.connectedcommunity.org [10.110.1.242]) by ws5-mx01.kavi.com (Postfix) with ESMTP id 647BC19093D for ; Tue, 12 Sep 2023 13:05:33 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id DEB9D9866E6 for ; Tue, 12 Sep 2023 13:05:32 +0000 (UTC) Received: from host09.ws5.connectedcommunity.org (host09.ws5.connectedcommunity.org [10.110.1.97]) by lists.oasis-open.org (Postfix) with QMQP id 4E4AE986499; Tue, 12 Sep 2023 13:05:32 +0000 (UTC) Mailing-List: contact virtio-dev-help@lists.oasis-open.org; run by ezmlm List-ID: Sender: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 2B4359864A4; Tue, 12 Sep 2023 13:04:11 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com X-IronPort-AV: E=McAfee;i="6600,9927,10831"; a="357797127" X-IronPort-AV: E=Sophos;i="6.02,139,1688454000"; d="scan'208";a="357797127" X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10831"; a="693485406" X-IronPort-AV: E=Sophos;i="6.02,139,1688454000"; d="scan'208";a="693485406" Message-ID: <133d6a2f-026d-e94a-12b1-707bbbd8a51a@intel.com> Date: Tue, 12 Sep 2023 21:04:03 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0 Thunderbird/102.15.0 Content-Language: en-US To: Parav Pandit , Jason Wang Cc: "Michael S. Tsirkin" , "eperezma@redhat.com" , "cohuck@redhat.com" , "stefanha@redhat.com" , "virtio-comment@lists.oasis-open.org" , "virtio-dev@lists.oasis-open.org" References: <20230906081637.32185-1-lingshan.zhu@intel.com> <2b3e8da1-5cbb-f990-0c1d-c0e894a73486@intel.com> <17514b93-2da4-42b3-a5bf-b96358a7a875@intel.com> <9fabd346-9b6f-a727-3de8-813ec3570772@intel.com> <2baee870-bf38-5d83-0543-1d0a68f8e651@intel.com> <8bd1c228-856a-9454-752d-750997c4f4db@intel.com> <4c39bfe6-1acf-6ee7-2a0c-1861fa680eb4@intel.com> From: "Zhu, Lingshan" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: [virtio-dev] Re: [virtio-comment] [PATCH 5/5] virtio-pci: implement VIRTIO_F_QUEUE_STATE On 9/12/2023 6:40 PM, Parav Pandit wrote: >> From: Zhu, Lingshan >> Sent: Tuesday, September 12, 2023 4:02 PM >> >> On 9/12/2023 6:25 PM, Parav Pandit wrote: >>>> From: Zhu, Lingshan >>>> Sent: Tuesday, September 12, 2023 3:47 PM >>>> >>>> On 9/12/2023 5:28 PM, Parav Pandit wrote: >>>>>> From: Zhu, Lingshan >>>>>> Sent: Tuesday, September 12, 2023 2:36 PM If you want AQ used for >>>>>> LM, it should support nested anyway, don't break user logic. >>>>> You ignored the other part of my question when you asked above. >>>>> i.e. a PCI transport do not allow such weird bifurcation. >>>> I failed to process your comment. >>>> Do you mean the registers don't support nested? >>> No. I mean registers access should support device reset flow and FLR flow. >> DO you see this is a concern? Or why do you think there are problems? > Yes. administration queue wont answer after SUSPEND is done in device status. > So how do you plan to support AQ, inflight tracking dirty tracking and suspend device status? > > Device bifurcation is not supported in the pci spec and its hack in virtio to do so. > > As I asked few times before, if you have solved this, I am very interested to learn more about it. Please read the series --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org