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Re: [Xen-devel] [PATCH 4/5] xen/pciback: Expand the warning message to include domain id.



On Fri, 2012-01-06 at 15:03 +0000, Konrad Rzeszutek Wilk wrote:
> On Fri, Jan 06, 2012 at 08:38:09AM +0000, Jan Beulich wrote:
> > >>> On 05.01.12 at 01:46, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> 
> > >>> wrote:
> > > When a PCI device is transferred to another domain and it is still
> > > in usage (from the internal perspective), mention which other
> > > domain is using it to aid in debugging.
> > > 
> > > Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> > > ---
> > >  drivers/xen/xen-pciback/xenbus.c |    6 ++++--
> > >  1 files changed, 4 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/drivers/xen/xen-pciback/xenbus.c 
> > > b/drivers/xen/xen-pciback/xenbus.c
> > > index 474d52e..fa130bd 100644
> > > --- a/drivers/xen/xen-pciback/xenbus.c
> > > +++ b/drivers/xen/xen-pciback/xenbus.c
> > > @@ -243,8 +243,10 @@ static int xen_pcibk_export_device(struct 
> > > xen_pcibk_device *pdev,
> > >   dev_dbg(&dev->dev, "registering for %d\n", pdev->xdev->otherend_id);
> > >   if (xen_register_device_domain_owner(dev,
> > >                                        pdev->xdev->otherend_id) != 0) {
> > > -         dev_err(&dev->dev, "device has been assigned to another " \
> > > -                 "domain! Over-writting the ownership, but beware.\n");
> > > +         int other_domain = xen_find_device_domain_owner(dev);
> > > +         dev_err(&dev->dev, "device has been assigned to %d " \
> > > +                 "domain! Over-writting the ownership, but beware.\n",
> > > +                 other_domain);
> > 
> > As you're touching this anyway, how about fixing the other minor
> > issues with it too? E.g.
> > 
> >             dev_err(&dev->dev, "Device appears to be assigned to dom%d!"
> >                     " Overwriting the ownership, but beware.\n",
> >                     xen_find_device_domain_owner(dev));
> > 
> > (a native English speaker may want to comment the "but beware"
> > part - it reads odd for me).
> 
> Hm, lets ask the English speakers. Ian?

I think you underestimate a native speakers ability to mangle a
language. Especially this one ;-)

Anyway, I think it's unnecessary, so you may as well drop it and just
have:

                dev_err(&dev->dev, "Device appears to be assigned to dom%d!"
                        " Overwriting the ownership.\n",
                        xen_find_device_domain_owner(dev));

I suppose you might want "Overriding ownership to dom%d".

Ian.


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