linux-kernel - Re: [patch V2 34/46] PCI/MSI: Make arch_.*_msi

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Date:   Fri, 28 Aug 2020 09:54:03 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Marc Zyngier <maz@...nel.org>
CC:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>, <x86@...nel.org>,
        Joerg Roedel <joro@...tes.org>,
        <iommu@...ts.linux-foundation.org>, <linux-hyperv@...r.kernel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "Jon Derrick" <jonathan.derrick@...el.com>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Wei Liu <wei.liu@...nel.org>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        "Stephen Hemminger" <sthemmin@...rosoft.com>,
        Steve Wahl <steve.wahl@....com>,
        "Dimitri Sivanich" <sivanich@....com>, Russ Anderson <rja@....com>,
        <linux-pci@...r.kernel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
        "Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
        <xen-devel@...ts.xenproject.org>, Juergen Gross <jgross@...e.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Megha Dey <megha.dey@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        "Jacob Pan" <jacob.jun.pan@...el.com>,
        Baolu Lu <baolu.lu@...el.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Rob Herring <robh@...nel.org>
Subject: Re: [patch V2 34/46] PCI/MSI: Make arch_.*_msi_irq[s] fallbacks
 selectable

On Fri, Aug 28, 2020 at 01:47:59PM +0100, Marc Zyngier wrote:

> > So the arch_setup_msi_irq/etc is not really an arch hook, but some
> > infrastructure to support those 4 PCI root port drivers.
> 
> I happen to have a *really old* patch addressing Tegra [1], which
> I was never able to test (no HW). Rebasing it shouldn't be too hard,
> and maybe you can find someone internally willing to give it a spin?

Sure, that helps a bunch, I will ask internally if someone in that BU
can take a look.

Thanks,
Jason