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

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Message-ID: <MW4PR21MB20022E3A433CFA1558C71485C0D99@MW4PR21MB2002.namprd21.prod.outlook.com>
Date:   Mon, 13 Sep 2021 17:35:45 +0000
From:   Sunil Muthuswamy <sunilmut@...rosoft.com>
To:     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:     "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 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.

This patch depends on two other independent patch sets. First one
is the patch series from Michael Kelley titled:
"Enable Linux guests on Hyper-V on ARM64"
and the second one is from Boqun Feng titled:
"PCI: hv: Support host bridge probing on ARM64". Neither of these
patches are merged into one branch at the moment. I think its best
to carry this patch with the 'hyperv-next' tree after merging Boqun's
patch series.

Sunil Muthuswamy (2):
  PCI: hv: Make the code arch neutral
  PCI: hv: Support for Hyper-V vPCI for ARM64

 arch/arm64/hyperv/Makefile           |   2 +-
 arch/arm64/hyperv/hv_pci.c           | 275 +++++++++++++++++++++++++++
 arch/arm64/include/asm/hyperv-tlfs.h |   9 +
 arch/arm64/include/asm/mshyperv.h    |  26 +++
 arch/x86/include/asm/hyperv-tlfs.h   |  33 ++++
 arch/x86/include/asm/mshyperv.h      |  25 +++
 drivers/pci/Kconfig                  |   2 +-
 drivers/pci/controller/Kconfig       |   2 +-
 drivers/pci/controller/pci-hyperv.c  |  49 +++--
 include/asm-generic/hyperv-tlfs.h    |  33 ----
 10 files changed, 405 insertions(+), 51 deletions(-)
 create mode 100644 arch/arm64/hyperv/hv_pci.c

-- 
2.25.1