[PATCH v4 0/3] Add support for clean shutdown with MSHV

Praveen K Paladugu
2025-11-07T22:17:11Z

Add support for clean shutdown of the root partition when running on
MSHV Hypervisor.

v4:
- Adopted machine_ops to order invoking HV_ENTER_SLEEP_STATE as the
last step in shutdown sequence.
- This ensures rest of the cleanups are done before powering off

v3:
- Dropped acpi_sleep handlers as they are not used on mshv
- Applied ordering for hv_reboot_notifier
- Fixed build issues on i386, arm64 architectures

v2:
- Addressed review comments from v1.
- Moved all sleep state handling methods under CONFIG_ACPI stub
- - This fixes build issues on non-x86 architectures.

Praveen K Paladugu (3):
hyperv: Add definitions for MSHV sleep state configuration
hyperv: Use reboot notifier to configure sleep state
hyperv: Cleanly shutdown root partition with MSHV

arch/x86/hyperv/hv_init.c | 9 +++
arch/x86/include/asm/mshyperv.h | 4 ++
drivers/hv/mshv_common.c | 99 +++++++++++++++++++++++++++++++++
include/hyperv/hvgdk_mini.h | 4 +-
include/hyperv/hvhdk_mini.h | 33 +++++++++++
5 files changed, 148 insertions(+), 1 deletion(-)

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2.51.0