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Message-ID: <20221121083657.157152924@linutronix.de>
Date: Mon, 21 Nov 2022 15:37:46 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: x86@...nel.org, Joerg Roedel <joro@...tes.org>,
Will Deacon <will@...nel.org>, linux-pci@...r.kernel.org,
Bjorn Helgaas <bhelgaas@...gle.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Marc Zyngier <maz@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jason Gunthorpe <jgg@...lanox.com>,
Dave Jiang <dave.jiang@...el.com>,
Alex Williamson <alex.williamson@...hat.com>,
Kevin Tian <kevin.tian@...el.com>,
Dan Williams <dan.j.williams@...el.com>,
Logan Gunthorpe <logang@...tatee.com>,
Ashok Raj <ashok.raj@...el.com>, Jon Mason <jdmason@...zu.us>,
Allen Hubbe <allenbh@...il.com>
Subject: [patch V2 00/33] genirq, PCI/MSI: Support for per device MSI and
PCI/IMS - Part 3 implementation
This is V2 of the third part of the effort to provide support for per device
MSI interrupt domains.
Version 1 of this part can be found here:
https://lore.kernel.org/all/20221111133158.196269823@linutronix.de
This is based on the second part which is available here:
https://lore.kernel.org/all/20221121083210.309161925@linutronix.de
and from git:
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git devmsi-v2-part2
This third part is available from git too:
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git devmsi-v2-part3
This part provides the actual per device domain implementation and related
functionality:
1) Provide infrastructure to create and remove per device MSI domains
2) Implement per device MSI domains in the PCI/MSI code and make
them conditional on the availability of a suitable parent MSI
domain. This allows to convert the existing domains one by one
and keeps both the legacy and the current "global" PCI/MSI domain
model working.
3) Convert the related x86 MSI domains over (vector and remapping).
4) Provide core infrastructure for dynamic allocations
5) Provide PCI/MSI-X interfaces for device drivers to do post
MSI-X enable allocation/free
6) Enable dynamic allocation support on the x86 MSI parent domains
7) Provide infrastructure to create PCI/IMS domains
8) Enable IMS support on the x86 MSI parent domains
9) Provide a driver for IDXD which demonstrates how IMS domains
look like.
Changes vs. v1:
- Clarified argument names for the init callback (Jason)
- Split the domain and instance data and named them accordingly
- Fixed the recursive allocation issue and the missing index offset
(Reinette)
- Updated changelogs and comments (Bjorn, Jason)
- Fixed the kernel robot fallout from randconfig builds
- Picked up Reviewed/Acked-by tags where appropriate
Thanks,
tglx
---
arch/x86/include/asm/irq_remapping.h | 4
arch/x86/include/asm/msi.h | 6
arch/x86/include/asm/pci.h | 1
arch/x86/kernel/apic/msi.c | 208 +++++++++------
drivers/iommu/amd/amd_iommu_types.h | 1
drivers/iommu/amd/iommu.c | 23 +
drivers/iommu/intel/iommu.h | 1
drivers/iommu/intel/irq_remapping.c | 31 +-
drivers/irqchip/Kconfig | 7
drivers/irqchip/Makefile | 1
drivers/irqchip/irq-pci-intel-idxd.c | 143 ++++++++++
drivers/pci/msi/api.c | 117 ++++++++
drivers/pci/msi/irqdomain.c | 278 ++++++++++++++++++--
drivers/pci/msi/msi.c | 192 ++++++++------
drivers/pci/msi/msi.h | 4
include/linux/irqchip/irq-pci-intel-idxd.h | 22 +
include/linux/irqdomain.h | 9
include/linux/irqdomain_defs.h | 5
include/linux/msi.h | 149 +++++++++-
include/linux/msi_api.h | 38 ++
include/linux/pci.h | 14 +
kernel/irq/msi.c | 394 +++++++++++++++++++++++++++--
22 files changed, 1395 insertions(+), 253 deletions(-)
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