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

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Message-ID: <MW4PR21MB200217CCFBC351FD12D68DF0C0B29@MW4PR21MB2002.namprd21.prod.outlook.com>
Date:   Fri, 8 Oct 2021 17:19:53 +0000
From:   Sunil Muthuswamy <sunilmut@...rosoft.com>
To:     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>
CC:     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: [PATCH v2 0/2] PCI: hv: Hyper-V vPCI for ARM64

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

 MAINTAINERS                                 |   2 +
 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/Makefile             |   2 +-
 drivers/pci/controller/pci-hyperv-irqchip.c | 256 ++++++++++++++++++++
 drivers/pci/controller/pci-hyperv-irqchip.h |  21 ++
 drivers/pci/controller/pci-hyperv.c         |  58 +++--
 include/asm-generic/hyperv-tlfs.h           |  33 ---
 11 files changed, 363 insertions(+), 62 deletions(-)
 create mode 100644 drivers/pci/controller/pci-hyperv-irqchip.c
 create mode 100644 drivers/pci/controller/pci-hyperv-irqchip.h


base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82
-- 
2.25.1