linux-kernel - RE: [patch V3 00/35] genirq/msi, PCI/MSI: Spring cleaning

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Date:   Thu, 16 Dec 2021 06:14:38 +0000
From:   "Michael Kelley (LINUX)" <mikelley@...rosoft.com>
To:     Thomas Gleixner <tglx@...utronix.de>, Nishanth Menon <nm@...com>
CC:     LKML <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Marc Zygnier <maz@...nel.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Megha Dey <megha.dey@...el.com>,
        Ashok Raj <ashok.raj@...el.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        Cedric Le Goater <clg@...d.org>,
        Juergen Gross <jgross@...e.com>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        Arnd Bergmann <arnd@...db.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Stuart Yoder <stuyoder@...il.com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        Tero Kristo <kristo@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Vinod Koul <vkoul@...nel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        Mark Rutland <Mark.Rutland@....com>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Peter Ujfalusi <peter.ujfalusi@...il.com>,
        Sinan Kaya <okaya@...nel.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        Johannes Berg <johannes.berg@...el.com>
Subject: RE: [patch V3 00/35] genirq/msi, PCI/MSI: Spring cleaning - Part 2

From: Thomas Gleixner <tglx@...utronix.de> Sent: Wednesday, December 15, 2021 8:36 AM
> 
> On Wed, Dec 15 2021 at 17:18, Thomas Gleixner wrote:
> 
> > On Tue, Dec 14 2021 at 22:19, Thomas Gleixner wrote:
> >> On Tue, Dec 14 2021 at 14:56, Nishanth Menon wrote:
> >>
> >> thanks for trying. I'll have a look again with brain awake tomorrow
> >> morning.
> >
> > Morning was busy with other things, but I found what my sleepy brain
> > managed to do wrong yesterday evening.
> >
> > Let me reintegrate the pile and I'll send you an update.
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git msi-v4.1-part-2
>    git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git msi-v4.2-part-3
> 
> That should cure the problem.

Tested the msi-v4.2-part-3 tag in two different Azure/Hyper-V VMs.  One
is a Generation 1 VM that has legacy PCI devices and one is a Generation 2
VM with no legacy PCI devices.   Tested hot add and remove of Mellanox
CX-3 and CX-4 SR-IOV NIC virtual functions that are directly mapped into the
VM.  Also tested local NVMe devices directly mapped into one of the VMs.

No issues encountered.  So for Azure/Hyper-V specifically,

Tested-by: Michael Kelley <mikelley@...rosoft.com>