Re: [Xen-devel] pvhvm cpu hotplug not working in xen 4.4

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Mar 07, 2014 at 11:02:04AM +0100, Kristoffer Egefelt wrote:
> I would like this feature to be available, how complicated do you think it is 
> to patch it ?
> We don?t have extensive understanding of qemu, but if patching this are 
> unlikely to break other functionality, we would try and fix it now.
> 
> What do you think? - I guess the only alternative would be to downgrade qemu 
> from the one shipped with 4.4, which I?d like to avoid...
> 

Xen 4.4.0 has now been released (without the pvhvm vcpu hotplug support in 
upstream qemu).

.. but the pvhvm vcpu hotplug patches are already in qemu-upstream-4.4-testing 
tree:
http://xenbits.xen.org/gitweb/?p=qemu-upstream-4.4-testing.git;a=summary

So you can grab the patches from there and apply to your 4.4.0 version,
or just use the latest qemu-upstream-4.4-testing.git tree directly.

Those patches will be part of upcoming Xen 4.4.1 release.

Another option probably is to use qemu-traditional with Xen 4.4.0 .. ? 

-- Pasi

> 
> On 06/03/2014, at 15.59.33, Anthony PERARD <anthony.perard@xxxxxxxxxx> wrote:
> 
> > On Thu, Mar 06, 2014 at 02:32:48PM +0000, Ian Campbell wrote:
> >> On Thu, 2014-03-06 at 15:16 +0100, Kristoffer Egefelt wrote:
> >>> Is xl vcpu-set supposed to work with pvhvm in xen 4.4?
> >>> 
> >>> I?m trying with xen 4.4 rc-6 from git, getting libxl: error:
> >>> libxl_qmp.c:287:qmp_handle_error_response: received an error message
> >>> from QMP server: Not supported
> >>> 
> >>> Is some specific version of qemu needed?
> >> 
> >> Are you using the version tagged/shipped with 4.4-rc6 or one of your own
> >> devising? ISTR Anthony fixing this not so long ago -- which would
> >> suggest a fairly recent qemu was needed -- Anthony???
> > 
> > We might need to wait until 4.4.1 to get back this feature:
> > http://article.gmane.org/gmane.comp.emulators.xen.devel/188875
> > 
> > -- 
> > Anthony PERARD
> > 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel