netdev - Re: [PATCH 1/2] PCI: hv: enable pci_hyperv to allow dynamic vector allocation

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Message-ID: <87cydbrttv.ffs@tglx>
Date: Thu, 17 Apr 2025 12:00:28 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Shradha Gupta <shradhagupta@...ux.microsoft.com>,
 linux-hyperv@...r.kernel.org, linux-pci@...r.kernel.org,
 linux-kernel@...r.kernel.org, Nipun Gupta <nipun.gupta@....com>, Yury
 Norov <yury.norov@...il.com>, Jason Gunthorpe <jgg@...pe.ca>, Jonathan
 Cameron <Jonathan.Cameron@...ei.com>, Anna-Maria Behnsen
 <anna-maria@...utronix.de>, Shradha Gupta
 <shradhagupta@...ux.microsoft.com>, Shivamurthy Shastri
 <shivamurthy.shastri@...utronix.de>, Kevin Tian <kevin.tian@...el.com>,
 Long Li <longli@...rosoft.com>, Bjorn Helgaas <bhelgaas@...gle.com>, Rob
 Herring <robh@...nel.org>, Manivannan Sadhasivam
 <manivannan.sadhasivam@...aro.org>, Krzysztof Wilczyński
 <kw@...ux.com>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>, Dexuan Cui
 <decui@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, Haiyang Zhang
 <haiyangz@...rosoft.com>, "K. Y. Srinivasan" <kys@...rosoft.com>, Andrew
 Lunn <andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Konstantin Taranov
 <kotaranov@...rosoft.com>, Simon Horman <horms@...nel.org>, Leon
 Romanovsky <leon@...nel.org>, Maxim Levitsky <mlevitsk@...hat.com>, Erni
 Sri Satya Vennela <ernis@...ux.microsoft.com>, Peter Zijlstra
 <peterz@...radead.org>, netdev@...r.kernel.org,
 linux-rdma@...r.kernel.org, Paul Rosswurm <paulros@...rosoft.com>
Cc: Shradha Gupta <shradhagupta@...rosoft.com>
Subject: Re: [PATCH 1/2] PCI: hv: enable pci_hyperv to allow dynamic vector
 allocation

On Wed, Apr 16 2025 at 08:36, Shradha Gupta wrote:
> For supporting dynamic MSI vector allocation by pci controllers, enabling
> the flag MSI_FLAG_PCI_MSIX_ALLOC_DYN is not enough, msix_prepare_msi_desc()
> to prepare the desc is needed. Export pci_msix_prepare_desc() to allow pci
> controllers like pci-hyperv to support dynamic MSI vector allocation.
> Also, add the flag MSI_FLAG_PCI_MSIX_ALLOC_DYN and use
> pci_msix_prepare_desc() in pci_hyperv controller

Seems your newline key is broken. Please structure changelogs properly
in paragraphs:

https://www.kernel.org/doc/html/latest/process/maintainer-tip.html#changelog

>  drivers/pci/controller/pci-hyperv.c | 7 +++++--
>  drivers/pci/msi/irqdomain.c         | 5 +++--
>  include/linux/msi.h                 | 2 ++

This wants to be split into a patch which exports
pci_msix_prepare_desc() and one which enables the functionality in
PCI/HV.

Thanks,

        tglx