linux-kernel - Re: [PATCH] Improve docs for IOCTL_GNTDEV_MAP_GRANT

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Message-ID: <337b7168-b1c0-cdba-2ae0-482bb16ab2ec@suse.com>
Date:   Mon, 31 Jan 2022 07:42:16 +0100
From:   Juergen Gross <jgross@...e.com>
To:     Demi Marie Obenour <demiobenour@...il.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Cc:     xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Improve docs for IOCTL_GNTDEV_MAP_GRANT_REF

On 30.01.22 19:35, Demi Marie Obenour wrote:
> The current implementation of gntdev guarantees that the first call to
> IOCTL_GNTDEV_MAP_GRANT_REF will set @index to 0.  This is required to
> use gntdev for Wayland, which is a future desire of Qubes OS.
> Additionally, requesting zero grants results in an error, but this was
> not documented either.  Document both of these.

Please add a "Signed-off-by:" tag to your commit message.

See Documentation/process/submitting-patches.rst in the kernel source
tree, look for "Sign your work - the Developer's Certificate of Origin".


Juergen

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