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Subject: Re: Use of VM_IOREMAP in xenbus
To:     Christoph Hellwig <hch@lst.de>, Wei Liu <wl@xen.org>
Cc:     Bob Liu <bob.liu@oracle.com>,
        "Durrant, Paul" <pdurrant@amazon.com>,
        Konrad Wilk <konrad.wilk@oracle.com>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Stefano Stabellini <sstabellini@kernel.org>,
        xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
References: <20200409061846.GA30241@lst.de>
From:   =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= <jgross@suse.com>
Message-ID: <8074b77d-d784-95ee-8d47-069827855876@suse.com>
Date:   Thu, 9 Apr 2020 08:37:48 +0200
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Adjusting recipient list (dropping David, new mail addresses for Wei and
Paul).

On 09.04.20 08:18, Christoph Hellwig wrote:
> Hi Wei,
> 
> commit ccc9d90a9a8b5 ("xenbus_client: Extend interface to support
> multi-page ring") addes a use of vmap in what is now
> xenbus_map_ring_valloc_hvm, and uses the VM_IOREMAP flag that is
> only really intended for implementing ioremap.  Do you remember
> what the reason is that this flag was used?
> 

Juergen