linux-kernel - Re: [patch 13/39] PCI/MSI: Use msi_domain_info::bus

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Date:   Wed, 16 Nov 2022 23:51:54 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Jason Gunthorpe <jgg@...dia.com>
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>,
        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>,
        "Ahmed S. Darwish" <darwi@...utronix.de>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [patch 13/39] PCI/MSI: Use msi_domain_info::bus_token

On Wed, Nov 16 2022 at 13:51, Jason Gunthorpe wrote:
> On Fri, Nov 11, 2022 at 02:54:35PM +0100, Thomas Gleixner wrote:
>>  	/* PCI-MSI is oneshot-safe */
>>  	info->chip->flags |= IRQCHIP_ONESHOT_SAFE;
>> +	/* Let the core update the bus token */
>> +	info->bus_token = DOMAIN_BUS_PCI_MSI;
>
> comment seems a bit obvious

:)

> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
>
> Should the callers be updated to set this in their "struct
> msi_domain_info" ?

For PCI/MSI we can handle that in the core for all of them. :)

The other msi_domain_info usage in various places needs obviously
special care.

Thanks,

        tglx