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Message-Id: <1637225490-2213-1-git-send-email-sunilmut@linux.microsoft.com>
Date: Thu, 18 Nov 2021 00:51:28 -0800
From: Sunil Muthuswamy <sunilmut@...ux.microsoft.com>
To: kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
wei.liu@...nel.org, maz@...nel.org, decui@...rosoft.com,
tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
lorenzo.pieralisi@....com, robh@...nel.org, kw@...ux.com,
bhelgaas@...gle.com, arnd@...db.de
Cc: x86@...nel.org, linux-kernel@...r.kernel.org,
linux-hyperv@...r.kernel.org, linux-pci@...r.kernel.org,
linux-arch@...r.kernel.org,
Sunil Muthuswamy <sunilmut@...rosoft.com>
Subject: [PATCH v6 0/2] PCI: hv: Hyper-V vPCI for arm64
From: Sunil Muthuswamy <sunilmut@...rosoft.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
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