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Re: [Xen-devel] [PATCH v5 2/5] libxl: add query function for backend support by device model



On Wed, Mar 30, 2016 at 04:02:20PM +0200, Juergen Gross wrote:
> On 30/03/16 15:53, Wei Liu wrote:
> > On Wed, Mar 30, 2016 at 02:05:55PM +0200, Juergen Gross wrote:
> >> Add a function to query whether the device model is supporting a
> >> specific backend type. The device model is writing the supported
> >> backend types to Xenstore on startup. The new query function checks
> >> for the appropriate entry to be present.
> >>
> >> As not all versions of qemu are capable to indicate support of
> >> specific backends the query function is to be called with an indicator
> >> whether the default return value should be "supported" (in case qemu
> >> doesn't know set any support information) or "not supported".
> >>
> >> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
> > 
> > The code itself looks straightforward enough.
> > 
> > But note that this is a new protocol that needs to be supported
> > essentially forever. I've CC QEMU maintainers for their input.
> 
> Okay, I'll send the qemu patch now.
> 

And also a patch to docs/misc/xenstore-paths.markdown please.

Wei.

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