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xen-devel
Re: [Xen-devel] Re: hvmloader/xenbus.c: How to modify or add a key-value
(please do not top post)
On Tue, 2011-08-16 at 16:32 +0100, Bei Guan wrote:
> Many thanks to all of you.
> I see there are some functions in mini-os/xenbus/xenbus.c, such as
> xenbus_write() and xenbus_rm(). All of them seem to change the keys
> and values in xenstore. I have tried these functions and found that
> they have no effect on the keys and values in xenstore.
Tried in the context of mini-os or tried by ripping them out and into
hvmloader?
> So, do these functions can really work?
mini-os's frontend drivers presumably use them so I'd expect so.
> What special things need I to do to make them work?
Which specific path are you trying to write?
>
>
>
>
> Thanks,
> Bei Guan
>
>
> 2011/8/16 Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>
> On Mon, 2011-08-15 at 16:20 +0100, Bei Guan wrote:
> > Maybe the VM doesn't have the permission to write its own
> key in
> > Xenstore.
>
>
> It is quite common for keys in xenstore to be ro for the guest
> (only the
> backend or toolstack domain can write to them).
>
> Ian.
>
>
>
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