[GIT PULL] Hyper-V patches for 7.0

[Wei Liu]

Hi Linus,

The following changes since commit 18f7fcd5e69a04df57b563360b88be72471d6b62:

  Linux 6.19-rc8 (2026-02-01 14:01:13 -0800)

are available in the Git repository at:

  ssh://git@xxxxxxxxxxxxxxxxxxx/pub/scm/linux/kernel/git/hyperv/linux.git tags/hyperv-next-signed-20260218

for you to fetch changes up to 158ebb578cd5f7881fdc7c4ecebddcf9463f91fd:

  mshv: Handle insufficient root memory hypervisor statuses (2026-02-19 06:42:11 +0000)

----------------------------------------------------------------
hyperv-next for v7.0
  - Debugfs support for MSHV statistics (Nuno Das Neves)
  - Support for the integrated scheduler (Stanislav Kinsburskii)
  - Various fixes for MSHV memory management and hypervisor status
    handling (Stanislav Kinsburskii)
  - Expose more capabilities and flags for MSHV partition management
    (Anatol Belski, Muminul Islam, Magnus Kulke)
  - Miscellaneous fixes to improve code quality and stability (Carlos
    López, Ethan Nelson-Moore, Li RongQing, Michael Kelley, Mukesh
    Rathor, Purna Pavan Chandra Aekkaladevi, Stanislav Kinsburskii, Uros
    Bizjak) 
  - PREEMPT_RT fixes for vmbus interrupts (Jan Kiszka)
----------------------------------------------------------------
Anatol Belski (1):
      mshv: Add SMT_ENABLED_GUEST partition creation flag

Carlos López (1):
      mshv: clear eventfd counter on irqfd shutdown

Ethan Nelson-Moore (1):
      PCI: hv: remove unnecessary module_init/exit functions

Ethan Tidmore (1):
      x86/hyperv: Fix error pointer dereference

Jan Kiszka (1):
      Drivers: hv: vmbus: Use kthread for vmbus interrupts on PREEMPT_RT

Li RongQing (1):
      mshv: fix SRCU protection in irqfd resampler ack handler

Magnus Kulke (1):
      mshv: expose the scrub partition hypercall

Michael Kelley (7):
      PCI: hv: Remove unused field pci_bus in struct hv_pcibus_device
      mshv: Fix compiler warning about cast converting incompatible function type
      mshv: Use EPOLLIN and EPOLLHUP instead of POLLIN and POLLHUP
      Drivers: hv: Use memremap()/memunmap() instead of ioremap_cache()/iounmap()
      x86/hyperv: Use memremap()/memunmap() instead of ioremap_cache()/iounmap()
      x86/hyperv: Update comment in hyperv_cleanup()
      Drivers: hv: vmbus: Simplify allocation of vmbus_evt

Mukesh R (3):
      x86/hyperv: fix a compiler warning in hv_crash.c
      x86/hyperv: Move hv crash init after hypercall pg setup
      mshv: make field names descriptive in a header struct

Mukesh Rathor (1):
      x86/hyperv: Reserve 3 interrupt vectors used exclusively by MSHV

Muminul Islam (1):
      mshv: Add nested virtualization creation flag

Nuno Das Neves (3):
      mshv: Update hv_stats_page definitions
      mshv: Add data for printing stats page counters
      mshv: Add debugfs to view hypervisor statistics

Purna Pavan Chandra Aekkaladevi (1):
      mshv: Ignore second stats page map result failure

Stanislav Kinsburskii (8):
      mshv: Use typed hv_stats_page pointers
      mshv: Improve mshv_vp_stats_map/unmap(), add them to mshv_root.h
      mshv: Always map child vp stats pages regardless of scheduler type
      mshv: Add support for integrated scheduler
      mshv: Introduce hv_result_needs_memory() helper function
      mshv: Introduce hv_deposit_memory helper functions
      mshv: Handle insufficient contiguous memory hypervisor status
      mshv: Handle insufficient root memory hypervisor statuses

Uros Bizjak (3):
      x86/hyperv: Use savesegment() instead of inline asm() to save segment registers
      x86/hyperv: Remove ASM_CALL_CONSTRAINT with VMMCALL insn
      mshv: Use try_cmpxchg() instead of cmpxchg()

 arch/x86/hyperv/hv_crash.c               |   3 +-
 arch/x86/hyperv/hv_init.c                |  20 +-
 arch/x86/hyperv/hv_vtl.c                 |   8 +-
 arch/x86/hyperv/ivm.c                    |  11 +-
 arch/x86/kernel/cpu/mshyperv.c           |  25 ++
 drivers/hv/Makefile                      |   1 +
 drivers/hv/hv.c                          |  12 +-
 drivers/hv/hv_common.c                   |   3 +
 drivers/hv/hv_proc.c                     |  53 ++-
 drivers/hv/hyperv_vmbus.h                |   4 +-
 drivers/hv/mshv_debugfs.c                | 726 +++++++++++++++++++++++++++++++
 drivers/hv/mshv_debugfs_counters.c       | 490 +++++++++++++++++++++
 drivers/hv/mshv_eventfd.c                |  22 +-
 drivers/hv/mshv_eventfd.h                |   1 -
 drivers/hv/mshv_regions.c                |  60 +--
 drivers/hv/mshv_root.h                   |  59 ++-
 drivers/hv/mshv_root_hv_call.c           | 104 +++--
 drivers/hv/mshv_root_main.c              | 238 ++++++----
 drivers/hv/mshv_vtl_main.c               |   5 +-
 drivers/hv/vmbus_drv.c                   |  86 +++-
 drivers/pci/controller/pci-hyperv-intf.c |  12 -
 drivers/pci/controller/pci-hyperv.c      |   1 -
 include/asm-generic/mshyperv.h           |  13 +
 include/hyperv/hvgdk_mini.h              |  58 +--
 include/hyperv/hvhdk.h                   |   9 +
 include/hyperv/hvhdk_mini.h              |   9 +-
 include/uapi/linux/mshv.h                |   2 +
 27 files changed, 1775 insertions(+), 260 deletions(-)
 create mode 100644 drivers/hv/mshv_debugfs.c
 create mode 100644 drivers/hv/mshv_debugfs_counters.c