linux-kernel - Re: [patch 15/39] PCI/MSI: Get rid of PCI_MSI_IRQ

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Message-ID: <87r0y2q19n.ffs@tglx>
Date:   Wed, 16 Nov 2022 18:04:20 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Marc Zyngier <maz@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Ashok Raj <ashok.raj@...el.com>, Jon Mason <jdmason@...zu.us>,
        Allen Hubbe <allenbh@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org,
        "Ahmed S. Darwish" <darwi@...utronix.de>,
        Reinette Chatre <reinette.chatre@...el.com>
Subject: Re: [patch 15/39] PCI/MSI: Get rid of PCI_MSI_IRQ_DOMAIN

On Wed, Nov 16 2022 at 10:12, Bjorn Helgaas wrote:
> On Fri, Nov 11, 2022 at 02:54:38PM +0100, Thomas Gleixner wrote:
>> What a zoo:
>> 
>>      PCI_MSI
>> 	select GENERIC_MSI_IRQ
>> 
>>      PCI_MSI_IRQ_DOMAIN
>>      	def_bool y
>> 	depends on PCI_MSI
>> 	select GENERIC_MSI_IRQ_DOMAIN
>> 
>> Ergo PCI_MSI enables PCI_MSI_IRQ_DOMAIN which in turn selects
>> GENERIC_MSI_IRQ_DOMAIN. So all the dependencies on PCI_MSI_IRQ_DOMAIN are
>> just an indirection to PCI_MSI.
>> 
>> Match the reality and just admit that PCI_MSI requires
>> GENERIC_MSI_IRQ_DOMAIN.
>> 
>> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
>
> Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>
>
> Just FYI, this will conflict with my work-in-progress to add more
> COMPILE_TEST coverage:
>   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?id=72b5e7c401a1
>
> No *actual* conflicts, just textually next door, so should be sipmle
> to resolve.  Worst case I can postpone my patch until the next cycle.

Linus should be able to resolve that conflict :)