linux-kernel - Re: [PATCH kernel 2/3] pci-ioda: Set PCI_BUS_FLAGS_MSI

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Message-ID: <877f0dppql.fsf@concordia.ellerman.id.au>
Date:   Thu, 15 Jun 2017 19:25:06 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Alexey Kardashevskiy <aik@...abs.ru>, linuxppc-dev@...ts.ozlabs.org
Cc:     kvm@...r.kernel.org, Alexey Kardashevskiy <aik@...abs.ru>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Gavin Shan <gwshan@...ux.vnet.ibm.com>,
        Yongji Xie <elohimes@...il.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Paul Mackerras <paulus@...ba.org>,
        Yongji Xie <xyjxie@...ux.vnet.ibm.com>,
        David Gibson <david@...son.dropbear.id.au>
Subject: Re: [PATCH kernel 2/3] pci-ioda: Set PCI_BUS_FLAGS_MSI_REMAP for IODA host bridge

Alexey Kardashevskiy <aik@...abs.ru> writes:

> From: Yongji Xie <elohimes@...il.com>
>
> Any IODA host bridge have the capability of IRQ remapping.
> So we set PCI_BUS_FLAGS_MSI_REMAP when this kind of host birdge
> is detected.

Where's the code that actually enforces this property?

It would be good to have a comment in pnv_pci_ioda_root_bridge_prepare()
(probably), pointing to that code, so that we can remember the
relationship between the two.

cheers