Re: [PATCH] MAINTAINERS: add PCI Endpoint NTB drivers to NTB files

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On Thu, Aug 18, 2022 at 11:32:30AM +0530, Manivannan Sadhasivam wrote:
> + Kishon (PCI EP Maintainer)
> 
> On Fri, Aug 12, 2022 at 03:42:05PM -0400, Jon Mason wrote:
> > The PCI Endpoint NTB drivers are under the NTB umbrella.  Add an entry
> > there to allow for notification of changes for it.
> > 
> > Signed-off-by: Jon Mason <jdmason@xxxxxxxx>
> 
> Hi Jason,

I assume you mean me.  Odd that you got my name wrong 2 lines below it
being properly written out.

> I know that this patch is already in Linus's tree but I think this PCI Endpoint
> VNTB driver is not going in a correct path. First, Kishon is not convinced with
> the way the PCI Endpoint VNTB function driver is written currently. He prefers
> the VirtIO approach over the current one [1].

To your point, this is already in Linus' tree.  If it is not the way
people want it, patches accepted.

Kishon (in the thread) recommended doing it one way, and Frank
responded he liked doing it another.  Kishon didn't respond to that
last email.  To me, this is an acceptable technical disagreement that
can be addressed in the future and no need to prevent working patches
from being accepted.

> But while the conversation was still going on, the series got merged via NTB
> tree without any ACKs from the PCI/PCI_EP maintainers. Also, note that there
> was a patch touching the PCI Controller driver as well and that was also not
> ACKed [2].

I put the series in my ntb-next branch, which was pulled into linux-next
for roughly 3 months, and he did not object then (though likely he did
not notice).  Multiple patches were submitted to the relevant mailing
lists to address minor issues in the series (from being in linux-next)
and most/all of those hit the PCI mailing list.  Bjorn responded to
all of them saying they needed to go through the ntb tree (because of
the dependency on Frank Li's original series).  So while not an
explicit ack, it was implicit to me in that he was aware of the
series.

Given the length of time and the public work on the series, how much
longer should I have waited for a nack?

> If this trend is going to continue in the coming days, then I'm afraid that NTB
> might end up being a backdoor for PCI/PCI_EP patches :(

Completely unfounded, per Bjorn's comment on
https://lore.kernel.org/all/20220815183920.GA1960006@bhelgaas/

Thanks,
Jon

> 
> Thanks,
> Mani
> 
> [1] https://lore.kernel.org/all/20220222162355.32369-4-Frank.Li@xxxxxxx
> [2] https://lore.kernel.org/all/20220222162355.32369-2-Frank.Li@xxxxxxx
> 
> > ---
> >  MAINTAINERS | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index 64379c699903..47e9f86bd712 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -14254,6 +14254,7 @@ W:	https://github.com/jonmason/ntb/wiki
> >  T:	git git://github.com/jonmason/ntb.git
> >  F:	drivers/net/ntb_netdev.c
> >  F:	drivers/ntb/
> > +F:	drivers/pci/endpoint/functions/pci-epf-*ntb.c
> >  F:	include/linux/ntb.h
> >  F:	include/linux/ntb_transport.h
> >  F:	tools/testing/selftests/ntb/
> > -- 
> > 2.30.2
> > 
> 
> -- 
> மணிவண்ணன் சதாசிவம்



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