[PATCH 00/11] irqchip: MSI parent cleanup and PCI host driver conversion

Marc Zyngier
2024-12-04T12:46:06Z

I've become annoyed by the couple of machines I have around that
haven't been converted to the per-device MSI infrastructure. At the
same time, I've also moaned at the amount of boilerplate code required
to make use of this infrastructure.

This series therefore does a number of things:

- make irq-msi-lib.h globally available, so that PCI (and other
subsystems) may make use of it

- add a new helper (msi_create_parent_irq_domain()) that encapsulates
most of the magic required to create an MSI-parent domain

- convert all the existing users *except* arch/x86/kernel/apic/msi.c,
which is far too esoteric for me to touch it

- convert the Apple and XGene MSI drivers to the MSI-parent
infrastructure, which is why I came here the first place.

I've only tested the arm64 stuff I have access to (or care about), and
I would appreciate the respective maintainers/users of the other
drivers to give it a go, or at least a cursory look.

Patches on top of 6.13-rc1.

Marc Zyngier (11):
irqchip: Make irq-msi-lib.h globally available
genirq/msi: Add helper for creating MSI-parent irq domains
irqchip/gic: Convert to msi_create_parent_irq_domain() helper
irqchip/mvebu: Convert to msi_create_parent_irq_domain() helper
irqchip/riscv-imsic: Convert to msi_create_parent_irq_domain() helper
irqchip/imx-mu-msi: Convert to msi_create_parent_irq_domain() helper
irqchip/loongson-pch-msi: Convert to msi_create_parent_irq_domain()
helper
iommu/amd: Convert to msi_create_parent_irq_domain() helper
iommu/intel: Convert to msi_create_parent_irq_domain() helper
PCI: apple: Convert to MSI parent infrastructure
PCI: xgene: Convert to MSI parent infrastructure

drivers/iommu/amd/iommu.c | 12 ++--
drivers/iommu/intel/irq_remapping.c | 16 ++----
drivers/irqchip/irq-gic-v2m.c | 11 ++--
drivers/irqchip/irq-gic-v3-its-msi-parent.c | 2 +-
drivers/irqchip/irq-gic-v3-its.c | 16 ++----
drivers/irqchip/irq-gic-v3-mbi.c | 11 ++--
drivers/irqchip/irq-imx-mu-msi.c | 10 ++--
drivers/irqchip/irq-loongarch-avec.c | 2 +-
drivers/irqchip/irq-loongson-pch-msi.c | 15 ++---
drivers/irqchip/irq-msi-lib.c | 2 +-
drivers/irqchip/irq-mvebu-gicp.c | 14 ++---
drivers/irqchip/irq-mvebu-icu.c | 2 +-
drivers/irqchip/irq-mvebu-odmi.c | 15 ++---
drivers/irqchip/irq-mvebu-sei.c | 16 ++----
drivers/irqchip/irq-riscv-imsic-platform.c | 11 ++--
drivers/pci/controller/Kconfig | 2 +
drivers/pci/controller/pci-xgene-msi.c | 44 +++++---------
drivers/pci/controller/pcie-apple.c | 57 ++++++-------------
.../linux}/irqchip/irq-msi-lib.h | 6 +-
include/linux/msi.h | 7 +++
kernel/irq/msi.c | 40 +++++++++++++
21 files changed, 146 insertions(+), 165 deletions(-)
rename {drivers => include/linux}/irqchip/irq-msi-lib.h (84%)

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2.39.2