[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v5 2/5] libxl: add query function for backend support by device model
On Wed, Mar 30, 2016 at 03:26:23PM +0100, Wei Liu wrote: > On Wed, Mar 30, 2016 at 04:11:39PM +0200, Juergen Gross wrote: > > On 30/03/16 16:09, Wei Liu wrote: > > > 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. > > > > Aah, sure. > > > > Actually wait, I think all QEMU nodes are either under documented or I > looked at the wrong place. I don't think there is anything missing, in term of PV protocol, which go through xenstore. Is there a node in particular that you are thinking of? > Anthony, how should we document the protocol between QEMU and toolstack? > Did I look at the wrong place? I think xenstore-paths.markdown would be a good place to document this protocol. -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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