| From: |
| Sunil Muthuswamy <sunilmut-AT-linux.microsoft.com> |
| To: |
| kys-AT-microsoft.com, haiyangz-AT-microsoft.com, sthemmin-AT-microsoft.com, wei.liu-AT-kernel.org, maz-AT-kernel.org, decui-AT-microsoft.com, tglx-AT-linutronix.de, mingo-AT-redhat.com, bp-AT-alien8.de, hpa-AT-zytor.com, lorenzo.pieralisi-AT-arm.com, robh-AT-kernel.org, kw-AT-linux.com, bhelgaas-AT-google.com, arnd-AT-arndb.de |
| Subject: |
| [PATCH v6 0/2] PCI: hv: Hyper-V vPCI for arm64 |
| Date: |
| Thu, 18 Nov 2021 00:51:28 -0800 |
| Message-ID: |
| <1637225490-2213-1-git-send-email-sunilmut@linux.microsoft.com> |
| Cc: |
| x86-AT-kernel.org, linux-kernel-AT-vger.kernel.org, linux-hyperv-AT-vger.kernel.org, linux-pci-AT-vger.kernel.org, linux-arch-AT-vger.kernel.org, Sunil Muthuswamy <sunilmut-AT-microsoft.com> |
| Archive-link: |
| Article |
From: Sunil Muthuswamy <sunilmut@microsoft.com>
Current Hyper-V vPCI code only compiles and works for x86. 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
x86 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
changes in v3 -> v4:
- Removed the separate file for IRQ chip that was there in previous
iterations and moved the IRQ chip implementation to pci-hyperv.c.
Feedback by Michael Kelley and Marc Zyngier.
- Addressed various comments from Marc Zyngier about structuring and
layout.
- Addressed comment from Marc Zyngier about IRQ affinity and other
miscellaneous comments.
changes in v4 -> v5:
- Fixed an issue with picking the right cpu for irq affinity, identified
by Marc Zyngier.
changes in v5 -> v6:
- Minor comment updates suggested by Michael Kelley.
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/pci-hyperv.c | 281 ++++++++++++++++++++++++---
include/asm-generic/hyperv-tlfs.h | 33 ----
7 files changed, 300 insertions(+), 67 deletions(-)
base-commit: fa55b7dcdc43c1aa1ba12bca9d2dd4318c2a0dbf
--
2.25.1
