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 5EF35C4332F for ; Mon, 6 Nov 2023 10:29:52 +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 B91DB2CAE7 for ; Mon, 6 Nov 2023 10:29:51 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 9731798672B for ; Mon, 6 Nov 2023 10:29:51 +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 7F55798671A; Mon, 6 Nov 2023 10:29:51 +0000 (UTC) Mailing-List: contact virtio-comment-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 6F4ED98671B for ; Mon, 6 Nov 2023 10:29:51 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com X-MC-Unique: DoCXSe2XM7C8iOXMYdWKCA-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699266585; x=1699871385; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=hNg0HcF7hUWBCIVXMa+MG+IqXm1SxVRlhARsFZkjOJ4=; b=mP+O2WZszEakvTNoT+zM7j5ZawjSdl3eh0EJ79sDCvvSavd8lVEz2QqI8SfJqbmfJW 5iw8zdnvafz83LV5soqSCVkO+NpsOnhG1I0Zk9kXOqf9xjVjtGLlUkOAX0l1y2x5Y/DE 3ON533sMfo6oX6ncCx6TkXPsxgJCK6mWosK5KI0ark+ZkA2SPc+AZAExj3HoqTWjXaNa jHzZeFQQQ/hv26PPX4QHyzLf8B+H/c+P7pTej9DxQssTt9RFl4kJUDXt46eMGTKBheJ2 KnIk5HplBOiJk9Ep+jrCFRQbAbImMrazTB6yt4+a7TSgPnBDxxFqUJ90OUgDKWz1zFiS NZ7Q== X-Gm-Message-State: AOJu0Yw3V/1EpUYE+qyWLB4OXOPWgHbHd/spACHq7Rb0gesbQmyUXTOW NaEJ1X2CW4QXASJ79ig/00u9pZ9ft2A+m9rbQgmkAG9QsQzmLTv7VdQAs0UPWx90XfrRFNRmUlV IJ7KDKjv31O+ocBg1TG6w8ivythbdu6LSSA== X-Received: by 2002:a2e:2c09:0:b0:2c5:14eb:1086 with SMTP id s9-20020a2e2c09000000b002c514eb1086mr21684229ljs.24.1699266585460; Mon, 06 Nov 2023 02:29:45 -0800 (PST) X-Google-Smtp-Source: AGHT+IHZRGYUHQOxSheHqYBoeNvaXlSM/jrBzTI2jMUVznuvo7GtjaIGWy8rLyoLa0HKAiXRRpK0Xg== X-Received: by 2002:a2e:2c09:0:b0:2c5:14eb:1086 with SMTP id s9-20020a2e2c09000000b002c514eb1086mr21684203ljs.24.1699266585174; Mon, 06 Nov 2023 02:29:45 -0800 (PST) Date: Mon, 6 Nov 2023 05:29:41 -0500 From: "Michael S. Tsirkin" To: Parav Pandit Cc: "Zhu, Lingshan" , "jasowang@redhat.com" , "eperezma@redhat.com" , "cohuck@redhat.com" , "stefanha@redhat.com" , "virtio-comment@lists.oasis-open.org" Message-ID: <20231106052340-mutt-send-email-mst@kernel.org> References: <20231103103437.72784-1-lingshan.zhu@intel.com> <20231103103437.72784-7-lingshan.zhu@intel.com> <20231103064730-mutt-send-email-mst@kernel.org> <445ff573-72c3-4fe4-9e07-e7fdd2dc5750@intel.com> MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Subject: [virtio-comment] Re: [PATCH V2 6/6] virtio-pci: implement dirty page tracking On Mon, Nov 06, 2023 at 04:34:44AM +0000, Parav Pandit wrote: > > Do you know there are locked transaction and atomic operations in PCI??? > Can you explain how PCI does RMW locked transaction? > Is it one TLP or multiple? Parav what are you asking about here? pcie supports CAS and Swap which likely can work for this use-case - these are non posted writes. It's in the pcie spec. Zhu Lingshan if your proposal relies on this then you should include - explanation on how it's supposed to be implemented using AtomicOp - some data on how common support is or is likely to be in the field -- MST This publicly archived list offers a means to provide input to the OASIS Virtual I/O Device (VIRTIO) TC. In order to verify user consent to the Feedback License terms and to minimize spam in the list archive, subscription is required before posting. Subscribe: virtio-comment-subscribe@lists.oasis-open.org Unsubscribe: virtio-comment-unsubscribe@lists.oasis-open.org List help: virtio-comment-help@lists.oasis-open.org List archive: https://lists.oasis-open.org/archives/virtio-comment/ Feedback License: https://www.oasis-open.org/who/ipr/feedback_license.pdf List Guidelines: https://www.oasis-open.org/policies-guidelines/mailing-lists Committee: https://www.oasis-open.org/committees/virtio/ Join OASIS: https://www.oasis-open.org/join/