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Re: Use of VM_IOREMAP in xenbus
- To: Christoph Hellwig <hch@xxxxxx>, Wei Liu <wl@xxxxxxx>
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Thu, 9 Apr 2020 08:37:48 +0200
- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Konrad Wilk <konrad.wilk@xxxxxxxxxx>, "Durrant, Paul" <pdurrant@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Bob Liu <bob.liu@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Delivery-date: Thu, 09 Apr 2020 06:37:57 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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
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