On Fri, Oct 08, 2021 at 05:19:53PM +0000, Sunil Muthuswamy wrote:

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

If you have occasion to post a v3, note that this is not correctly
threaded with patches as responses to the cover letter.  Thereore,
"b4 am MW4PR21MB200217CCFBC351FD12D68DF0C0B29@MW4PR21MB2002.namprd21.prod.outlook.com"
does not work to download this series.  See

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/5.Posting.rst?id=v5.14#n320