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

From: Sunil Muthuswamy
Date: Mon Sep 13 2021 - 13:35:54 EST


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

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2.25.1