Re: [Xen-devel] [PATCH] xen/mcfg: Call PHYSDEVOP_pci_mmcfg_reserved before PCI enumeration

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 22.09.15 at 16:03, <konrad.wilk@xxxxxxxxxx> wrote:
> On Tue, Sep 22, 2015 at 07:52:19AM -0600, Jan Beulich wrote:
>> >>> On 22.09.15 at 15:39, <konrad.wilk@xxxxxxxxxx> wrote:
>> > On Tue, Sep 22, 2015 at 06:26:11AM -0700, Ed Swierk wrote:
>> >> Any other ideas?
>> > 
>> > I like it - as it will update it right away. However we would need some
>> > extra smarts in Xen to reconfigure its view of the PCI device now that the
>> > extended configuration space has become available.
>> 
>> What parts are you thinking of that would need updating (and
>> aren't getting updated already)?
> 
> The VF data. As before this call Xen might have not been able to
> get to the extended configuration.

I still don't understand: Afaics pci_add_device() updates everything
that may need updating already. And things appear to be working
fine with our kernel (where the MMCFG notification comes right out
of the x86 code earlier referred to), despite this meaning updates
to the data collected during early boot. I guess you'll need to be
more specific on what you see missing...

Jan


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