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Re: [Xen-devel] [PATCH 1/2] xen-unstable/blkif: Move read/write/barrier specific fields into a union

  • To: Christoph Egger <Christoph.Egger@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxx>
  • Date: Fri, 14 Jan 2011 17:15:06 +0000
  • Cc: "owen.smith@xxxxxxxxxx" <owen.smith@xxxxxxxxxx>
  • Delivery-date: Fri, 14 Jan 2011 09:20:14 -0800
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  • Thread-topic: [Xen-devel] [PATCH 1/2] xen-unstable/blkif: Move read/write/barrier specific fields into a union
On 14/01/2011 16:55, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote:

>> Patches xen-unstable.hg
>> 
>> Modifies the blkif ring interface by placing the request specific
>> fields into a union in order to support additional operation types.
>> 
>> Signed-off-by: Owen Smith <owen.smith@xxxxxxxxxx>
> 
> When a blkif interface change is acceptable can you also
> allow to deal with 64kb blocksize, please?
> This fixes a performance problem with *BSD guests then.

The binary interface is not being changed here, it's source-level renaming
only. And thus I hope we can avoid it altogether.

 -- Keir



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