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Subject[PATCH v3 0/2] PCI: hv: Hyper-V vPCI for ARM64
From: Sunil Muthuswamy <>

Current Hyper-V vPCI code only compiles and works for x64. There are some
hardcoded assumptions about the architectural IRQ chip and other arch

Add support for Hyper-V vPCI for ARM64 by first breaking the current hard
coded dependency using a set of new interfaces and implementing those for
X64 first. That is in the first patch. The second patch adds support for
Hyper-V vPCI for ARM64 by implementing the above mentioned interfaces. That
is done by introducing a Hyper-V vPCI specific MSI IRQ domain & chip for
allocating SPI vectors.

changes in v1 -> 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
- Addressed other code feedback from Marc Zyngier

changes in v2 -> v3:
- Addressed comments from Bjorn Helgaas about patch formatting and
- Using 'git send-email' to ensure that the patch series is correctly
threaded. Feedback by Bjorn Helgaas
- Fixed Hyper-V vPCI build break for module build, reported by Boqun Feng

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

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 | 267 ++++++++++++++++++++
drivers/pci/controller/pci-hyperv-irqchip.h | 20 ++
drivers/pci/controller/pci-hyperv.c | 58 +++--
include/asm-generic/hyperv-tlfs.h | 33 ---
11 files changed, 373 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

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