linux-kernel - Re: [PATCH] xen/privcmd: allow fetching resource sizes

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Message-ID: <5063e696-5a7f-4429-048e-2bf0d14881d7@suse.com>
Date:   Tue, 12 Jan 2021 06:57:30 +0100
From:   Jürgen Groß <jgross@...e.com>
To:     Roger Pau Monne <roger.pau@...rix.com>,
        linux-kernel@...r.kernel.org
Cc:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Paul Durrant <paul.durrant@...rix.com>,
        xen-devel@...ts.xenproject.org
Subject: Re: [PATCH] xen/privcmd: allow fetching resource sizes

On 11.01.21 16:29, Roger Pau Monne wrote:
> Allow issuing an IOCTL_PRIVCMD_MMAP_RESOURCE ioctl with num = 0 and
> addr = 0 in order to fetch the size of a specific resource.
> 
> Add a shortcut to the default map resource path, since fetching the
> size requires no address to be passed in, and thus no VMA to setup.
> 
> Fixes: 3ad0876554caf ('xen/privcmd: add IOCTL_PRIVCMD_MMAP_RESOURCE')

I don't think this addition is a reason to add a "Fixes:" tag. This is
clearly new functionality.


Juergen

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