From: Keir Fraser <keir.xen@gmail.com>
To: "Justin T. Gibbs" <justing@spectralogic.com>,
Jan Beulich <JBeulich@suse.com>
Cc: "<xen-devel@lists.xensource.com>" <xen-devel@lists.xensource.com>
Subject: Re: [PATCH 5 of 5] blkif.h: Define and document the request number/size/segments extension
Date: Thu, 09 Feb 2012 04:32:08 -0800 [thread overview]
Message-ID: <CB58FCC8.2AC02%keir.xen@gmail.com> (raw)
In-Reply-To: <493FE9A7-2B9A-4744-8AB3-447ED7B86492@spectralogic.com>
On 08/02/2012 22:22, "Justin T. Gibbs" <justing@spectralogic.com> wrote:
> The versioning required allows a driver to declare, "I am compatible
> with any source compatibility breaking changes up to version X of
> the header file". Declaring support for the latest version does
> not require that a driver implement the new extensions. Just one
> constant needs to be renamed. So I don't see this as really altering
> the interface between front and backends (i.e. it is not a "blkif2")
>
> If the xen-compat.h behavior is that you can safely import the
> public headers so long as you do not bump __XEN_INTERFACE_VERSION__
> until after you have audited and adjusted for the #ifdef guarded
> changes in the header files, then that is exactly what is needed
> in blkif.h.
That's what XEN_INTERFACE_VERSION is for, yes.
-- Keir
next prev parent reply other threads:[~2012-02-09 12:32 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-03 5:24 [PATCH 0 of 5] blkif.h: Document protocol and existing extensions Justin T. Gibbs
2012-02-03 5:24 ` [PATCH 1 of 5] blkif.h: Miscelaneous style fixes Justin T. Gibbs
2012-02-09 9:30 ` Ian Campbell
2012-02-03 5:24 ` [PATCH 2 of 5] blkif.h: Provide more complete documentation of the blkif interface Justin T. Gibbs
2012-02-07 17:51 ` Ian Jackson
2012-02-08 23:24 ` Justin T. Gibbs
2012-02-09 9:36 ` Ian Campbell
2012-02-09 15:19 ` Ian Jackson
2012-02-03 5:24 ` [PATCH 3 of 5] blkif.h: Add definitions for virtual block device major numbers Justin T. Gibbs
2012-02-03 13:31 ` Jan Beulich
2012-02-03 15:49 ` Justin Gibbs
2012-02-09 9:46 ` Ian Campbell
2012-02-09 10:05 ` Paul Durrant
2012-02-09 16:41 ` Justin T. Gibbs
2012-02-07 17:33 ` Ian Jackson
2012-02-08 23:12 ` Justin T. Gibbs
2012-02-09 15:17 ` Ian Jackson
2012-02-09 16:40 ` Justin T. Gibbs
2012-02-09 16:52 ` Ian Jackson
2012-02-09 17:02 ` Ian Campbell
2012-02-03 5:24 ` [PATCH 4 of 5] blkif.h: Document the RedHat and Citrix blkif multi-page ring extensions Justin T. Gibbs
2012-02-03 13:33 ` Jan Beulich
2012-02-03 14:58 ` Justin Gibbs
2012-02-03 15:01 ` Jan Beulich
2012-02-03 15:19 ` Justin Gibbs
2012-02-03 16:12 ` Jan Beulich
2012-02-08 22:00 ` Justin T. Gibbs
2012-02-09 9:15 ` Jan Beulich
2012-02-09 14:56 ` Justin T. Gibbs
2012-02-09 9:48 ` Ian Campbell
2012-02-09 10:36 ` Jan Beulich
2012-02-09 10:40 ` Ian Campbell
2012-02-09 15:12 ` Justin T. Gibbs
2012-02-13 12:35 ` Ian Campbell
2012-02-14 13:56 ` Konrad Rzeszutek Wilk
2012-02-15 6:51 ` Justin T. Gibbs
2012-02-15 13:07 ` Justin T. Gibbs
2012-02-15 13:32 ` Ian Campbell
2012-02-03 5:24 ` [PATCH 5 of 5] blkif.h: Define and document the request number/size/segments extension Justin T. Gibbs
2012-02-03 13:34 ` Jan Beulich
2012-02-07 21:45 ` Justin Gibbs
2012-02-07 13:49 ` Keir Fraser
2012-02-08 7:48 ` Jan Beulich
2012-02-08 6:00 ` Keir Fraser
2012-02-08 16:20 ` Jan Beulich
2012-02-09 6:22 ` Justin T. Gibbs
2012-02-09 9:25 ` Jan Beulich
2012-02-09 12:44 ` Keir Fraser
2012-02-09 14:45 ` Justin T. Gibbs
2012-02-09 12:32 ` Keir Fraser [this message]
2012-02-08 7:49 ` Jan Beulich
2012-02-03 9:52 ` [PATCH 0 of 5] blkif.h: Document protocol and existing extensions Jan Beulich
2012-02-09 9:29 ` Ian Campbell
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