linux-kernel - [PATCH 00/17] irqfd and ioeventfd support for mshv

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Date:   Wed,  2 Jun 2021 17:20:45 +0000
From:   Vineeth Pillai <viremana@...ux.microsoft.com>
To:     Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        Sunil Muthuswamy <sunilmut@...rosoft.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     Vineeth Pillai <viremana@...ux.microsoft.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, linux-hyperv@...r.kernel.org
Subject: [PATCH 00/17] irqfd and ioeventfd support for mshv

This patch series adds irqfd and ioeventfd support for VMMs on Hyper-V.
Also adds support for in-kernel MSI irq routing framework. Both these
features are inspired from the kvm implementation and all credits to kvm
developers.

Patches 1-11 are preparatory patches for enabling irqfd/ioeventfd. Hyper-v
features like ports, connections, doorbell etc needs to be enabled to
implement irqfd and ioeventfd feature.

Patches 12-15 implements irqfd and ioeventfd, and 16 and 17 implements the
in-kernel MSI routing framework.

This patchset is rebased on Nuno's root partition ioctl interface series:
https://lkml.org/lkml/2021/5/28/820
---

Vineeth Pillai (17):
  hyperv: Few TLFS definitions
  drivers: hv: vmbus: Use TLFS definition for VMBUS_MESSAGE_SINT
  acpi: export node_to_pxm
  hyperv: Wrapper for setting proximity_domain_info
  mshv: SynIC event ring and event flags support
  mshv: SynIC port and connection hypercalls
  hyperv: Configure SINT for Doorbell
  mshv: Port id management
  mshv: Doorbell handler in hypercall ISR
  mshv: Doorbell register/unregister API
  mshv: HvClearVirtualInterrupt hypercall
  mshv: Add irqfd support for mshv
  mshv: Add ioeventfd support for mshv
  mshv: Notifier framework for EOI for level triggered interrupts
  mshv: Level-triggered interrupt support for irqfd
  mshv: User space controlled MSI irq routing for mshv
  mshv: Use in kernel MSI routing for irqfd

 arch/x86/hyperv/hv_init.c               |  32 +-
 arch/x86/hyperv/hv_proc.c               |  15 +-
 arch/x86/include/asm/hyperv-tlfs.h      |   2 +
 arch/x86/include/asm/mshyperv.h         |   2 +
 arch/x86/include/uapi/asm/hyperv-tlfs.h |   2 +
 drivers/acpi/numa/srat.c                |   1 +
 drivers/hv/Kconfig                      |   1 +
 drivers/hv/Makefile                     |   3 +-
 drivers/hv/hv_call.c                    | 181 ++++++
 drivers/hv/hv_eventfd.c                 | 723 ++++++++++++++++++++++++
 drivers/hv/hv_portid_table.c            |  83 +++
 drivers/hv/hv_synic.c                   | 383 +++++++++++--
 drivers/hv/hyperv_vmbus.h               |   2 +-
 drivers/hv/mshv.h                       |  52 ++
 drivers/hv/mshv_main.c                  |  96 +++-
 drivers/hv/mshv_msi.c                   | 128 +++++
 include/asm-generic/hyperv-tlfs.h       | 106 +++-
 include/asm-generic/mshyperv.h          |  14 +
 include/linux/hyperv.h                  |   9 -
 include/linux/mshv.h                    |  65 ++-
 include/linux/mshv_eventfd.h            |  78 +++
 include/uapi/asm-generic/hyperv-tlfs.h  |  81 +++
 include/uapi/linux/mshv.h               |  48 ++
 23 files changed, 2043 insertions(+), 64 deletions(-)
 create mode 100644 drivers/hv/hv_eventfd.c
 create mode 100644 drivers/hv/hv_portid_table.c
 create mode 100644 drivers/hv/mshv_msi.c
 create mode 100644 include/linux/mshv_eventfd.h

-- 
2.25.1