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* [PATCH v6 00/16] Introducing Linux root partition support for Microsoft Hypervisor
@ 2021-02-03 15:04 Wei Liu
  2021-02-03 15:04 ` [PATCH v6 01/16] asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT Wei Liu
                   ` (16 more replies)
  0 siblings, 17 replies; 32+ messages in thread
From: Wei Liu @ 2021-02-03 15:04 UTC (permalink / raw)
  To: Linux on Hyper-V List
  Cc: virtualization, Linux Kernel List, Michael Kelley,
	Vineeth Pillai, Sunil Muthuswamy, Nuno Das Neves, pasha.tatashin,
	Wei Liu, sameo, robert.bradford, sebastien.boeuf

Hi all

Here we propose this patch series to make Linux run as the root partition [0]
on Microsoft Hypervisor [1]. There will be a subsequent patch series to provide a
device node (/dev/mshv) such that userspace programs can create and run virtual
machines. We've also ported Cloud Hypervisor [3] over and have been able to
boot a Linux guest with Virtio devices since late July 2020.

This series implements only the absolutely necessary components to get
things running.  A large portion of this series consists of patches that
augment hyperv-tlfs.h.  They should be rather uncontroversial and can be
applied right away.

A few key things other than the changes to hyperv-tlfs.h:

1. Linux needs to setup existing Hyper-V facilities differently.
2. Linux needs to make a few hypercalls to bring up APs.
3. Interrupts are remapped by IOMMU, which is controlled by the hypervisor.
   Linux needs to make hypercalls to map and unmap interrupts. This is
   done by introducing a new MSI irqdomain and extending the remapping
   domain in hyperv-iommu.

This series is now based on 5.11-rc2.

Comments and suggestions are welcome.

Thanks,
Wei.

[0] Just think of it like Xen's Dom0.
[1] Hyper-V is more well-known, but it really refers to the whole stack
    including the hypervisor and other components that run in Windows kernel
    and userspace.
[3] https://github.com/cloud-hypervisor/

Cc: sameo@linux.intel.com
Cc: robert.bradford@intel.com
Cc: sebastien.boeuf@intel.com

Changes since v5:
1. Address Michael's comments.
2. Further improve and simplify code.
3. Drop a redundant patch and add one new patch for ACPI / NUMA code.

Changes since v4:
1. Rework IO-APIC handling.

Changes since v3:
1. Fix compilation errors.
2. Adapt to upstream changes.

Changes since v2:
1. Address more comments from Vitaly.
2. Fix and test 32bit build.

Changes since v1:
1. Simplify MSI IRQ domain implementation.
2. Address Vitaly's comments.

Wei Liu (16):
  asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to
    HV_CPU_MANAGEMENT
  x86/hyperv: detect if Linux is the root partition
  Drivers: hv: vmbus: skip VMBus initialization if Linux is root
  clocksource/hyperv: use MSR-based access if running as root
  x86/hyperv: allocate output arg pages if required
  x86/hyperv: extract partition ID from Microsoft Hypervisor if
    necessary
  x86/hyperv: handling hypercall page setup for root
  ACPI / NUMA: add a stub function for node_to_pxm()
  x86/hyperv: provide a bunch of helper functions
  x86/hyperv: implement and use hv_smp_prepare_cpus
  asm-generic/hyperv: update hv_msi_entry
  asm-generic/hyperv: update hv_interrupt_entry
  asm-generic/hyperv: introduce hv_device_id and auxiliary structures
  asm-generic/hyperv: import data structures for mapping device
    interrupts
  x86/hyperv: implement an MSI domain for root partition
  iommu/hyperv: setup an IO-APIC IRQ remapping domain for root partition

 arch/x86/hyperv/Makefile            |   4 +-
 arch/x86/hyperv/hv_init.c           | 107 +++++++-
 arch/x86/hyperv/hv_proc.c           | 219 ++++++++++++++++
 arch/x86/hyperv/irqdomain.c         | 387 ++++++++++++++++++++++++++++
 arch/x86/include/asm/hyperv-tlfs.h  |  23 ++
 arch/x86/include/asm/mshyperv.h     |  19 +-
 arch/x86/kernel/cpu/mshyperv.c      |  49 ++++
 drivers/clocksource/hyperv_timer.c  |   3 +
 drivers/hv/vmbus_drv.c              |   3 +
 drivers/iommu/hyperv-iommu.c        | 177 ++++++++++++-
 drivers/pci/controller/pci-hyperv.c |   2 +-
 include/acpi/acpi_numa.h            |   4 +
 include/asm-generic/hyperv-tlfs.h   | 254 +++++++++++++++++-
 13 files changed, 1230 insertions(+), 21 deletions(-)
 create mode 100644 arch/x86/hyperv/hv_proc.c
 create mode 100644 arch/x86/hyperv/irqdomain.c


base-commit: e71ba9452f0b5b2e8dc8aa5445198cd9214a6a62
-- 
2.20.1


^ permalink raw reply	[flat|nested] 32+ messages in thread

end of thread, other threads:[~2021-02-04 19:49 UTC | newest]

Thread overview: 32+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-03 15:04 [PATCH v6 00/16] Introducing Linux root partition support for Microsoft Hypervisor Wei Liu
2021-02-03 15:04 ` [PATCH v6 01/16] asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT Wei Liu
2021-02-03 15:04 ` [PATCH v6 02/16] x86/hyperv: detect if Linux is the root partition Wei Liu
2021-02-04 16:49   ` Michael Kelley
2021-02-03 15:04 ` [PATCH v6 03/16] Drivers: hv: vmbus: skip VMBus initialization if Linux is root Wei Liu
2021-02-03 15:04 ` [PATCH v6 04/16] clocksource/hyperv: use MSR-based access if running as root Wei Liu
2021-02-03 15:04 ` [PATCH v6 05/16] x86/hyperv: allocate output arg pages if required Wei Liu
2021-02-04 16:52   ` Michael Kelley
2021-02-03 15:04 ` [PATCH v6 06/16] x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary Wei Liu
2021-02-04 16:54   ` Michael Kelley
2021-02-03 15:04 ` [PATCH v6 07/16] x86/hyperv: handling hypercall page setup for root Wei Liu
2021-02-03 15:04 ` [PATCH v6 08/16] ACPI / NUMA: add a stub function for node_to_pxm() Wei Liu
2021-02-04 18:38   ` Wei Liu
2021-02-04 18:45     ` Rafael J. Wysocki
2021-02-04 18:48       ` Wei Liu
2021-02-03 15:04 ` [PATCH v6 09/16] x86/hyperv: provide a bunch of helper functions Wei Liu
2021-02-04 17:13   ` Michael Kelley
2021-02-03 15:04 ` [PATCH v6 10/16] x86/hyperv: implement and use hv_smp_prepare_cpus Wei Liu
2021-02-03 15:04 ` [PATCH v6 11/16] asm-generic/hyperv: update hv_msi_entry Wei Liu
2021-02-03 15:04 ` [PATCH v6 12/16] asm-generic/hyperv: update hv_interrupt_entry Wei Liu
2021-02-03 15:04 ` [PATCH v6 13/16] asm-generic/hyperv: introduce hv_device_id and auxiliary structures Wei Liu
2021-02-04 17:15   ` Michael Kelley
2021-02-03 15:04 ` [PATCH v6 14/16] asm-generic/hyperv: import data structures for mapping device interrupts Wei Liu
2021-02-03 15:04 ` [PATCH v6 15/16] x86/hyperv: implement an MSI domain for root partition Wei Liu
2021-02-04 17:43   ` Michael Kelley
2021-02-04 17:56     ` Wei Liu
2021-02-04 18:40       ` Michael Kelley
2021-02-04 18:43         ` Wei Liu
2021-02-03 15:04 ` [PATCH v6 16/16] iommu/hyperv: setup an IO-APIC IRQ remapping " Wei Liu
2021-02-04 13:33   ` Joerg Roedel
2021-02-04 17:53   ` Michael Kelley
2021-02-04 19:49 ` [PATCH v6 00/16] Introducing Linux root partition support for Microsoft Hypervisor Wei Liu

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