linux-kernel - Re: [PATCH 0/2] pci: endpoint: vntb: add MSI doorbell support

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Message-ID: <6iodjcf36dp3zhpy3tphrn6a43jaenpos7vcroouseevyzmxub@y3orprye3lrw>
Date: Fri, 29 Aug 2025 22:11:35 +0530
From: Manivannan Sadhasivam <mani@...nel.org>
To: Frank Li <Frank.li@....com>
Cc: Krzysztof Wilczyński <kwilczynski@...nel.org>, 
	Kishon Vijay Abraham I <kishon@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
	Jon Mason <jdmason@...zu.us>, Dave Jiang <dave.jiang@...el.com>, 
	Allen Hubbe <allenbh@...il.com>, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, 
	ntb@...ts.linux.dev
Subject: Re: [PATCH 0/2] pci: endpoint: vntb: add MSI doorbell support

On Fri, Aug 29, 2025 at 12:35:48PM GMT, Frank Li wrote:
> On Fri, Aug 15, 2025 at 06:20:52PM -0400, Frank Li wrote:
> > Since commit 1c3b002c6bf68 PCI: endpoint: Add RC-to-EP doorbell support
> > using platform MSI controller, PCI EP can get notification from Host.
> >
> > VNTB use this feature to reduce ping latency.
> >
> > The first patch impove epf core API to allow set any MMIO address to specfic
> > bar.
> >
> > The second patch add MSI doorbell support.
> 
> Manivannan Sadhasivam:
> 
> 	Do you have time to review this patch?
> 

Sorry for the delay. It is still in my review queue. Will get to it this
weekend.

- Mani

> Frank
> 
> >
> > Signed-off-by: Frank Li <Frank.Li@....com>
> > ---
> > Frank Li (2):
> >       PCI: endpoint: Enhance pci_epf_alloc_space() and rename to pci_epf_set_inbound_space()
> >       PCI: endpoint: pci-epf-vntb: Add MSI doorbell support
> >
> >  drivers/pci/endpoint/functions/pci-epf-vntb.c | 153 +++++++++++++++++++++++---
> >  drivers/pci/endpoint/pci-epf-core.c           |  69 +++++++++---
> >  include/linux/pci-epc.h                       |   5 -
> >  include/linux/pci-epf.h                       |  35 +++++-
> >  4 files changed, 223 insertions(+), 39 deletions(-)
> > ---
> > base-commit: c2a282d1fccc53a989da61a5da4f03c9d67ee99a
> > change-id: 20250812-vntb_msi_doorbell-bf0fbac6d6d7
> >
> > Best regards,
> > --
> > Frank Li <Frank.Li@....com>
> >

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