From: Sunil Muthuswamy <sunilmut@xxxxxxxxxxxxx> 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. 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 Zyngier - Addressed other code feedback from Marc Zyngier changes in v2 -> v3: - Addressed comments from Bjorn Helgaas about patch formatting and verbiage - 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 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 | 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 -- 2.25.1
