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 D9A59C77B7D for ; Mon, 15 May 2023 17:45:00 +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 20528157EFB for ; Mon, 15 May 2023 17:45:00 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 122119865A6 for ; Mon, 15 May 2023 17:45:00 +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 083E898650E; Mon, 15 May 2023 17:45:00 +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 E90A7986509 for ; Mon, 15 May 2023 17:44:56 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com X-MC-Unique: RofxkBuvMnyojBcHu9fb5w-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684172693; x=1686764693; 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=ynBZHqtMluZubVdFT50w4/fqWxmotBQ0cyJ5q8QKIiw=; b=Y+QIyt72Hcx1s+TIwbs0JHzPPz4pSuySfGwFu9fsCWvDmQ0+atitjRFCDW0psmN0HT WohUk0DjaT0ofFBEBtTAVqrA+GEwaR8eKvjsW3jEudDyMPLteVdsZ+fIrqlo1B146yxW uE7fnmKDffMWImwoy/sGJBder26Kkq76AQJxnm6bARxvc6fjV9n3MPNpBQ+3b77E9h9I kGLkapxVwJBdpnqIh+dyO+S4nHKCT23eDQTiHk6SiWxJaLLLCutwthcrorpT/NLKrqbv CSe1W2BYPNDokMgxtUCgWRO6MoRyYjNNXwWkjU8BeHn076VkddrzG8AddghH6JMqXP0p Rm2g== X-Gm-Message-State: AC+VfDxn1lK3skOJ+uW8rNXBVn1EkqPhjYjYxRM3SnAhrbUh2oOpuxwj Hc/6iMWRBAbxhXd2h9ceyzB0GcGb7znOoICWV0eMqAQ75cjO0PNKrW4kW36ArhYFi1GQRIxwcyz g7hw4tYjRJFyHAYboh1jUY5wzkv1i X-Received: by 2002:a5d:550c:0:b0:2f6:987f:a0f5 with SMTP id b12-20020a5d550c000000b002f6987fa0f5mr22899484wrv.5.1684172693383; Mon, 15 May 2023 10:44:53 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ58UeE+VJ1UvYzVWCe9tMrELR08hgwYbTjRVaUfUPBJiy3ixLDzbqnyS4p9jLiS9asiIjckkQ== X-Received: by 2002:a5d:550c:0:b0:2f6:987f:a0f5 with SMTP id b12-20020a5d550c000000b002f6987fa0f5mr22899466wrv.5.1684172693082; Mon, 15 May 2023 10:44:53 -0700 (PDT) Date: Mon, 15 May 2023 13:44:48 -0400 From: "Michael S. Tsirkin" To: Parav Pandit Cc: Jason Wang , "virtio-dev@lists.oasis-open.org" , "cohuck@redhat.com" , "david.edmondson@oracle.com" , "sburla@marvell.com" , Yishai Hadas , Maor Gottlieb , "virtio-comment@lists.oasis-open.org" , Shahaf Shuler Message-ID: <20230515133719-mutt-send-email-mst@kernel.org> References: <20230510014534-mutt-send-email-mst@kernel.org> <43ec1c8d-7d11-2400-3649-1fe366b1e21b@nvidia.com> <20230510121417-mutt-send-email-mst@kernel.org> <893b6ec0-a74f-69b7-95a3-988f0f9382a8@redhat.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-dev] Re: [PATCH v2 0/2] transport-pci: Introduce legacy registers access using AQ On Mon, May 15, 2023 at 03:49:44PM +0000, Parav Pandit wrote: > All legacy interface via AQ. > All modern interface access via PCI or its own transport between driver and device. I am wondering however about the hypervisor notifications. Generally these are the most problematic aspect here I feel. For example, how does it interact with VIRTIO_F_NOTIF_CONFIG_DATA? And generally, having both guest and host be allowed to access device's BAR seems problematic. Can we reserve a PF BAR region for these things or is that too expensive? -- MST --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org