Re: [v2][PATCH] xen/vtd/iommu: permit group devices to passthrough in relaxed mode

["Chen, Tiejun" <tiejun.chen@intel.com>]

>> But looks its not better, so any idea?
>
> Did you at least make an attempt to find other examples of where
> we dynamically determine the log level to be used for a message?
> I would assume that if you did, you'd have come to
>
>              printk(XENLOG_GUEST "%s" VTDPREFIX

I didn't know this tip on Xen side and its really good.

>                     " It's %s to assign %04x:%02x:%02x.%u"
>                     " with shared RMRR at %"PRIx64" for Dom%d.\n",
>                     relaxed ? XENLOG_WARNING : XENLOG_ERROR,
>                     relaxed ? "risky" : "disallowed",
>                     seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn),
>                     rmrr->base_address, d->domain_id);
>
> pretty naturally.
>

But I noticed my original patch is already merged into staging. So

Wei,

Do you think if we need a small patch to improved this? Maybe you can 
squash that if necessary.

Thanks
Tiejun