linux-kernel - Re: [PATCH] xen/privcmd: remove privcmd_ioctl

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Date:   Thu, 15 Sep 2022 11:32:10 +0200
From:   Jan Beulich <jbeulich@...e.com>
To:     Juergen Gross <jgross@...e.com>
Cc:     Stefano Stabellini <sstabellini@...nel.org>,
        Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] xen/privcmd: remove privcmd_ioctl_mmap()

On 15.09.2022 10:39, Juergen Gross wrote:
> The IOCTL_PRIVCMD_MMAP isn't in use by Xen since at least Xen 4.0.
> 
> Remove it from the privcmd driver.
> 
> Signed-off-by: Juergen Gross <jgross@...e.com>

Can we reasonably remove an IOCTL, without being entirely certain that
no users exist outside of xen.git? Even if so, shouldn't there be a
staged deprecation process?

Jan