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Date: Fri, 28 Aug 2020 09:54:03 -0300
From: Jason Gunthorpe <jgg@nvidia.com>
Subject: Re: [patch V2 34/46] PCI/MSI: Make arch_.*_msi_irq[s] fallbacks
 selectable
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To: Marc Zyngier <maz@kernel.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Bjorn Helgaas <helgaas@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, LKML <linux-kernel@vger.kernel.org>, x86@kernel.org, Joerg Roedel <joro@8bytes.org>, iommu@lists.linux-foundation.org, linux-hyperv@vger.kernel.org, Haiyang Zhang <haiyangz@microsoft.com>, Jon Derrick <jonathan.derrick@intel.com>, Lu Baolu <baolu.lu@linux.intel.com>, Wei Liu <wei.liu@kernel.org>, "K. Y. Srinivasan" <kys@microsoft.com>, Stephen Hemminger <sthemmin@microsoft.com>, Steve Wahl <steve.wahl@hpe.com>, Dimitri Sivanich <sivanich@hpe.com>, Russ Anderson <rja@hpe.com>, linux-pci@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, xen-devel@lists.xenproject.org, Juergen Gross <jgross@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Stefano Stabellini <sstabellini@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Rafael J. Wysocki" <rafael@kernel.org>, Megha Dey <megha.dey@intel.com>, Dave Jiang <dave.jiang@intel.com>, Alex Williamson <alex.williamson@redhat.com>, Jacob Pan <jacob.jun.pan@intel.com>, Baolu Lu <baolu.lu@intel.com>, Kevin Tian <kevin.tian@intel.com>, Dan Williams <dan.j.williams@intel.com>, Rob Herring <robh@kernel.org>

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