linux-kernel - [PATCH 0/5] Add new headers for Hyper-V Dom0

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Message-Id: <1727985064-18362-1-git-send-email-nunodasneves@linux.microsoft.com>
Date: Thu,  3 Oct 2024 12:50:59 -0700
From: Nuno Das Neves <nunodasneves@...ux.microsoft.com>
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Subject: [PATCH 0/5] Add new headers for Hyper-V Dom0

To support Hyper-V Dom0 (aka Linux as root partition), many new
definitions are required.

The plan going forward is to directly import headers from
Hyper-V. This is a more maintainable way to import definitions
rather than via the TLFS doc. This patch series introduces
new headers (hvhdk.h, hvgdk.h, etc, see patch #3) directly
derived from Hyper-V code.

This patch series replaces hyperv-tlfs.h with hvhdk.h, but only
in Microsoft-maintained Hyper-V code where they are needed. This
leaves the existing hyperv-tlfs.h in use elsewhere - notably for
Hyper-V enlightenments on KVM guests.

An intermediary header "hv_defs.h" is introduced to conditionally
include either hyperv-tlfs.h or hvhdk.h. This is required because
several headers which today include hyperv-tlfs.h, are shared
between Hyper-V and KVM code (e.g. mshyperv.h).

Summary:
Patch 1-2: Cleanup patches
Patch 3: Add the new headers (hvhdk.h, etc..) in include/hyperv/
Patch 4: Add hv_defs.h and use it in mshyperv.h, svm.h,
         hyperv_timer.h
Patch 5: Switch to the new headers, only in Hyper-V code

Nuno Das Neves (5):
  hyperv: Move hv_connection_id to hyperv-tlfs.h
  hyperv: Remove unnecessary #includes
  hyperv: Add new Hyper-V headers
  hyperv: Add hv_defs.h to conditionally include hyperv-tlfs.h or
    hvhdk.h
  hyperv: Use hvhdk.h instead of hyperv-tlfs.h in Hyper-V code

 arch/arm64/hyperv/hv_core.c              |    3 +-
 arch/arm64/hyperv/mshyperv.c             |    1 +
 arch/arm64/include/asm/mshyperv.h        |    2 +-
 arch/x86/entry/vdso/vma.c                |    1 +
 arch/x86/hyperv/hv_apic.c                |    2 +-
 arch/x86/hyperv/hv_init.c                |    3 +-
 arch/x86/hyperv/hv_proc.c                |    4 +-
 arch/x86/hyperv/hv_spinlock.c            |    1 +
 arch/x86/hyperv/hv_vtl.c                 |    1 +
 arch/x86/hyperv/irqdomain.c              |    1 +
 arch/x86/hyperv/ivm.c                    |    2 +-
 arch/x86/hyperv/mmu.c                    |    2 +-
 arch/x86/hyperv/nested.c                 |    2 +-
 arch/x86/include/asm/kvm_host.h          |    1 -
 arch/x86/include/asm/mshyperv.h          |    3 +-
 arch/x86/include/asm/svm.h               |    2 +-
 arch/x86/include/asm/vdso/gettimeofday.h |    1 +
 arch/x86/kernel/cpu/mshyperv.c           |    2 +-
 arch/x86/kernel/cpu/mtrr/generic.c       |    1 +
 arch/x86/kvm/vmx/vmx_onhyperv.h          |    1 -
 arch/x86/mm/pat/set_memory.c             |    2 -
 drivers/clocksource/hyperv_timer.c       |    2 +-
 drivers/hv/channel.c                     |    1 +
 drivers/hv/channel_mgmt.c                |    1 +
 drivers/hv/connection.c                  |    1 +
 drivers/hv/hv.c                          |    1 +
 drivers/hv/hv_balloon.c                  |    5 +-
 drivers/hv/hv_common.c                   |    2 +-
 drivers/hv/hv_kvp.c                      |    1 -
 drivers/hv/hv_snapshot.c                 |    1 -
 drivers/hv/hv_util.c                     |    1 +
 drivers/hv/hyperv_vmbus.h                |    1 -
 drivers/hv/ring_buffer.c                 |    1 +
 drivers/hv/vmbus_drv.c                   |    1 +
 drivers/iommu/hyperv-iommu.c             |    1 +
 drivers/net/hyperv/netvsc.c              |    1 +
 drivers/pci/controller/pci-hyperv.c      |    1 +
 include/asm-generic/hyperv-tlfs.h        |    9 +
 include/asm-generic/mshyperv.h           |    2 +-
 include/clocksource/hyperv_timer.h       |    2 +-
 include/hyperv/hv_defs.h                 |   29 +
 include/hyperv/hvgdk.h                   |   66 ++
 include/hyperv/hvgdk_ext.h               |   46 +
 include/hyperv/hvgdk_mini.h              | 1212 ++++++++++++++++++++++
 include/hyperv/hvhdk.h                   |  733 +++++++++++++
 include/hyperv/hvhdk_mini.h              |  310 ++++++
 include/linux/hyperv.h                   |   12 +-
 net/vmw_vsock/hyperv_transport.c         |    1 -
 48 files changed, 2442 insertions(+), 40 deletions(-)
 create mode 100644 include/hyperv/hv_defs.h
 create mode 100644 include/hyperv/hvgdk.h
 create mode 100644 include/hyperv/hvgdk_ext.h
 create mode 100644 include/hyperv/hvgdk_mini.h
 create mode 100644 include/hyperv/hvhdk.h
 create mode 100644 include/hyperv/hvhdk_mini.h

-- 
2.34.1