linux-kernel - Re: [PATCH v2 0/2] PCI: hv: Hyper-V vPCI for ARM64

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Message-ID: <20211008185209.GA1362885@bhelgaas>
Date:   Fri, 8 Oct 2021 13:52:09 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Sunil Muthuswamy <sunilmut@...rosoft.com>
Cc:     Marc Zyngier <maz@...nel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Boqun Feng <Boqun.Feng@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Dexuan Cui <decui@...rosoft.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        "Krzysztof Wilczyński" <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Wei Liu <wei.liu@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "\"H. Peter Anvin\"" <hpa@...or.com>,
        Arnd Bergmann <arnd@...db.de>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/2] PCI: hv: Hyper-V vPCI for ARM64

On Fri, Oct 08, 2021 at 05:19:53PM +0000, Sunil Muthuswamy wrote:
> Current Hyper-V vPCI code only compiles and works for x64. There are
> some hardcoded assumptions about the architectural IRQ chip and other
> arch defines.
> 
> This patch series adds support for Hyper-V vPCI for ARM64 by first
> breaking the current hard coded dependency in the vPCI code and
> making it arch neutral. That is in the first patch. The second
> patch introduces a Hyper-V vPCI MSI IRQ chip for allocating SPI
> vectors.
> 
> changes in v2:
>  - Moved the irqchip implementation to drivers/pci as suggested
>    by Marc Zyngier
>  - Addressed Multi-MSI handling issues identified by Marc Zyngier
>  - Addressed lock/synchronization primitive as suggested by Marc
>    Zyngier
>  - Addressed other code feedback from Marc Zyngier
> 
> Sunil Muthuswamy (2):
>   PCI: hv: Make the code arch neutral
>   PCI: hv: Support for Hyper-V vPCI for ARM64

If you have occasion to post a v3, note that this is not correctly
threaded with patches as responses to the cover letter.  Thereore,
"b4 am MW4PR21MB200217CCFBC351FD12D68DF0C0B29@...PR21MB2002.namprd21.prod.outlook.com"
does not work to download this series.  See

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/5.Posting.rst?id=v5.14#n320