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 0E95CC77B7A for ; Tue, 13 Jun 2023 07:46:37 +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 32F4D71C8B for ; Tue, 13 Jun 2023 07:46:37 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 14C9C98657E for ; Tue, 13 Jun 2023 07:46:37 +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 EF5DC9842EA; Tue, 13 Jun 2023 07:46:36 +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 DA1C398653E for ; Tue, 13 Jun 2023 07:46:36 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com X-MC-Unique: SttmmYEtOy6oDQffBmcHIA-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686642394; x=1689234394; 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=JG7SCf0RQfX6ymVn4iEhNzZEqE2ce5aO4edq59XIeAM=; b=TM/OGwqhcOl0k+0ayuYqBmY7QiHwofpvIIKBc+jUo1ChX5LpQEQjakTLGyqSIjeOWV 9yGt/fxTmVw2Ff0coNtC7OvxisDWfmTm/ZSv+RI+xKRZvfJUuNQxwRgcmsZH8WKpaNhg O8G4wIoi5WKM8E3KUka8KL0GcXlmHiIp97XcwHHd39UGwf2Au7U6NCUKCjNHXAOzrjvp M2YmwUgjNGIgCfkg8vyvaF5a/uJh2ibrCVL/WqEHC5KQqkk5HZcc2B3xQG9WhbWPFhci 0XQFKDYAfu7VmUFHZq9Hy/A5W4KibDfSiF+IF4hCQh0wNTHhEOps8IB+Gxzmg9s3ngXi 5qLw== X-Gm-Message-State: AC+VfDzOxdsaLZIerY4xrJqlokVKu5GmHS8G2nzFUl0Q5kJCLNYJuQl5 6b9z/vYg/L/qTPJbjyGvS1v+7D0jmHclwE+yrapNqJxAEV1kXM95jmpRpHG90pQzrSn5U/5wflg 6t3HSAEIrKhVpftLcIM8cXOQTCYSyUZye0w== X-Received: by 2002:ac8:58c3:0:b0:3f8:35e7:d0c6 with SMTP id u3-20020ac858c3000000b003f835e7d0c6mr18528287qta.30.1686642394562; Tue, 13 Jun 2023 00:46:34 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ5/Lz/SAqZQInLf0CA3CPgdgsMBvooXEnGwaDLn84MHlH40tAgAEHhjSp55J374ofxx6kk4Mw== X-Received: by 2002:ac8:58c3:0:b0:3f8:35e7:d0c6 with SMTP id u3-20020ac858c3000000b003f835e7d0c6mr18528267qta.30.1686642394304; Tue, 13 Jun 2023 00:46:34 -0700 (PDT) Date: Tue, 13 Jun 2023 03:46:20 -0400 From: "Michael S. Tsirkin" To: Eugenio Perez Martin Cc: Jason Wang , Xuan Zhuo , virtio-comment@lists.oasis-open.org, Laurent Vivier , Cindy Lu , cohuck@redhat.com, alvaro.karsz@solid-run.com, Liuxiangdong , Gautam Dawar , longpeng2@huawei.com, Dragos Tatulea , parav@nvidia.com, stefanha@redhat.com, Harpreet Singh Anand , Stefano Garzarella , Heng Qi , Zhu Lingshan , Shannon Nelson , mgurtovoy@nvidia.com, si-wei.liu@oracle.com Message-ID: <20230613034216-mutt-send-email-mst@kernel.org> References: <20230607162529-mutt-send-email-mst@kernel.org> <20230608020335-mutt-send-email-mst@kernel.org> <20230608031325-mutt-send-email-mst@kernel.org> <20230608180617-mutt-send-email-mst@kernel.org> <20230609115250-mutt-send-email-mst@kernel.org> 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: Re: [virtio-comment] Re: [PATCH 0/2] Selective queue enabling On Mon, Jun 12, 2023 at 09:56:57AM +0200, Eugenio Perez Martin wrote: > > > Another drawback of that is the long time a device can spend to > > > reconfigure its memory maps. > > > > The map is already used for cvq though, I don't see why it would take > > much more with this. > > > > In the case of vDPA HW, CVQ maps may not need to reach the device's or > platform IOMMU, so the modification of that mapping is way cheaper. Oh, I get it. It's setup time, but you are right. > > > taking that into account, does it make > > > sense to send a new version with the bit 1 on enable? > > > > > > Thanks! > > > > Current hardware won't support the extra bit though. -- 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/