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

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Message-ID: <aLHW5NWF3PVFo/xn@lizhi-Precision-Tower-5810>
Date: Fri, 29 Aug 2025 12:35:48 -0400
From: Frank Li <Frank.li@....com>
To: Manivannan Sadhasivam <mani@...nel.org>,
	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>
Cc: 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 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?

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>
>