linux-kernel - Re: [PATCH] xen: don't require virtio with grants for non-PV guests

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Message-ID: <YqnBZhiLOHnoalbC@infradead.org>
Date:   Wed, 15 Jun 2022 04:24:22 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Juergen Gross <jgross@...e.com>
Cc:     xen-devel@...ts.xenproject.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>
Subject: Re: [PATCH] xen: don't require virtio with grants for non-PV guests

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.