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Message-ID: <20211215163503.GA698547@bhelgaas>
Date:   Wed, 15 Dec 2021 10:35:03 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Sunil Muthuswamy <sunilmut@...ux.microsoft.com>
Cc:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        wei.liu@...nel.org, maz@...nel.org, decui@...rosoft.com,
        tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        lorenzo.pieralisi@....com, robh@...nel.org, kw@...ux.com,
        bhelgaas@...gle.com, arnd@...db.de, x86@...nel.org,
        linux-kernel@...r.kernel.org, linux-hyperv@...r.kernel.org,
        linux-pci@...r.kernel.org, linux-arch@...r.kernel.org,
        Sunil Muthuswamy <sunilmut@...rosoft.com>
Subject: Re: [PATCH v6 0/2] PCI: hv: Hyper-V vPCI for arm64

On Thu, Nov 18, 2021 at 12:51:28AM -0800, Sunil Muthuswamy wrote:

> Sunil Muthuswamy (2):
>   PCI: hv: Make the code arch neutral by adding arch specific interfaces
>   arm64: PCI: hv: Add support for Hyper-V vPCI

Both patches are primarily to drivers/pci/controller/pci-hyperv.c, so
why do the subject lines look so different?

Instead of making up a new format from scratch, look at the previous
history and copy it:

  $ git log --oneline drivers/pci/controller/pci-hyperv.c
  f18312084300 ("PCI: hv: Remove unnecessary use of %hx")
  41608b64b10b ("PCI: hv: Fix sleep while in non-sleep context when removing child devices from the bus")
  88f94c7f8f40 ("PCI: hv: Turn on the host bridge probing on ARM64")
  9e7f9178ab49 ("PCI: hv: Set up MSI domain at bridge probing time")
  38c0d266dc80 ("PCI: hv: Set ->domain_nr of pci_host_bridge at probing time")
  418cb6c8e051 ("PCI: hv: Generify PCI probing")
  8f6a6b3c50ce ("PCI: hv: Support for create interrupt v3")
  7d815f4afa87 ("PCI: hv: Add check for hyperv_initialized in init_hv_pci_drv()")
  326dc2e1e59a ("PCI: hv: Remove bus device removal unused refcount/functions")
  ...

The second patch adds arm64 support, so it *should* mention arm64, but
it can be something like this:

  PCI: hv: Add arm64 Hyper-V vPCI support

>  arch/arm64/include/asm/hyperv-tlfs.h |   9 +
>  arch/x86/include/asm/hyperv-tlfs.h   |  33 ++++
>  arch/x86/include/asm/mshyperv.h      |   7 -
>  drivers/pci/Kconfig                  |   2 +-
>  drivers/pci/controller/Kconfig       |   2 +-
>  drivers/pci/controller/pci-hyperv.c  | 281 ++++++++++++++++++++++++---
>  include/asm-generic/hyperv-tlfs.h    |  33 ----
>  7 files changed, 300 insertions(+), 67 deletions(-)

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