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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA56CC433EF for ; Wed, 15 Jun 2022 11:24:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345394AbiFOLYh (ORCPT ); Wed, 15 Jun 2022 07:24:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52484 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344963AbiFOLY2 (ORCPT ); Wed, 15 Jun 2022 07:24:28 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB9BC3BF8D; Wed, 15 Jun 2022 04:24:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=BK8bIaaa2wq3VpZdMmSbQMojkUO+GHs4/AOKLZKBl7Q=; b=UB+Jljv2uYmYDQ6VXlacVbsXef dqTRZnATTAR/5b7GUWgSzE2FyUwMS4FTTKpvLECUeCtZ50iJ1WdKIYoleKOcawth62F9jFMifLH48 PAt5nKttUO4No+iT6DksuV0nbb73d28QWyXshaWvgzjsMgR7Oiy/6VA9EiKsjGoL/SOxns4rzYxQj /nN7UlP7WD9hOWDF1/jaod4Gu888DPsfRrTbvJxkllsilOnIN5u15pb8xTD1Qgi4f4RZPzZZKC4MK QRVBML5IGUKiQeW7tocw75XsUZrep09UuxgSrXGIMzD7EXwzqK/rvezMjvOxA9v2PTZgTAzI7kpte P3e2OYXQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1R8I-00E9lp-6L; Wed, 15 Jun 2022 11:24:22 +0000 Date: Wed, 15 Jun 2022 04:24:22 -0700 From: Christoph Hellwig To: Juergen Gross Cc: xen-devel@lists.xenproject.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan Corbet , Stefano Stabellini , Oleksandr Tyshchenko Subject: Re: [PATCH] xen: don't require virtio with grants for non-PV guests Message-ID: References: <20220615084835.27113-1-jgross@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220615084835.27113-1-jgross@suse.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I don't think this command line mess is a good idea. Instead the brand new grant devices need to be properly advertised in the device tree, and any device that isn't a grant device doesn't need VIRTIO_F_ACCESS_PLATFORM. No need for a command line or user intervention.