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

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Message-ID: <20251107221700.45957-1-prapal@linux.microsoft.com>
Date: Fri,  7 Nov 2025 16:16:46 -0600
From: Praveen K Paladugu <prapal@...ux.microsoft.com>
To: kys@...rosoft.com,
	haiyangz@...rosoft.com,
	wei.liu@...nel.org,
	decui@...rosoft.com,
	tglx@...utronix.de,
	mingo@...hat.com,
	linux-hyperv@...r.kernel.org,
	linux-kernel@...r.kernel.org,
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	dave.hansen@...ux.intel.com,
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Cc: anbelski@...ux.microsoft.com,
	prapal@...ux.microsoft.com,
	easwar.hariharan@...ux.microsoft.com,
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Subject: [PATCH v4 0/3] Add support for clean shutdown with MSHV

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(-)

-- 
2.51.0