linux-kernel - [PATCH v2 0/2] Add support for clean shutdown with MSHV

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Message-ID: <20251014164150.6935-1-prapal@linux.microsoft.com>
Date: Tue, 14 Oct 2025 11:41:19 -0500
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,
	bp@...en8.de,
	dave.hansen@...ux.intel.com,
	x86@...nel.org,
	hpa@...or.com,
	arnd@...db.de
Cc: anbelski@...ux.microsoft.com,
	prapal@...ux.microsoft.com,
	easwar.hariharan@...ux.microsoft.com,
	nunodasneves@...ux.microsoft.com,
	skinsburskii@...ux.microsoft.com
Subject: [PATCH v2 0/2] Add support for clean shutdown with MSHV

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

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

Moving the declartion of `hv_sleep_notifiers_register` to
arch/x86/include/asm/mshyperv.h, required the use of CONFIG_X86 stub
within hv_common.c. As this sleep configuration is dependent on ACPI,
I moved all the methods under CONFIG_ACPI to keep the code cleaner,
without introducing CONFIG_X86 stub.


Praveen K Paladugu (2):
  hyperv: Add definitions for MSHV sleep state configuration
  hyperv: Enable clean shutdown for root partition with MSHV

 arch/x86/hyperv/hv_init.c       |   7 ++
 arch/x86/include/asm/mshyperv.h |   1 +
 drivers/hv/hv_common.c          | 119 ++++++++++++++++++++++++++++++++
 include/hyperv/hvgdk_mini.h     |   4 +-
 include/hyperv/hvhdk_mini.h     |  33 +++++++++
 5 files changed, 163 insertions(+), 1 deletion(-)

-- 
2.51.0