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Message-ID: <58cb22cb-b0c8-4694-b9e4-971aa7f0f972@linux.microsoft.com> Date: Tue, 23 Dec 2025 15:05:47 -0800 From: Hardik Garg <hargar@...ux.microsoft.com> To: kys@...rosoft.com, haiyangz@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com, krzk+dt@...nel.org, robh@...nel.org, conor+dt@...nel.org, mhklinux@...look.com Cc: devicetree@...r.kernel.org, linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org, ssengar@...ux.microsoft.com, longli@...rosoft.com, Naman Jain <namjain@...ux.microsoft.com>, hargar@...rosoft.com Subject: [PATCH v5 0/2] Add VMBus message connection ID support via DeviceTree This patch series adds support for reading the VMBus message connection ID from DeviceTree. The connection-id determines which hypervisor communication channel the guest should use to talk to the VMBus host. Changes in v5: - Updated subject line and commit description to clarify what connection ID is and why DeviceTree support is required - Addressed reviewer feedback about zero handling and binding constraints - Revised binding description to clarify version-based selection instead of using "defaults" language - Fixed checkpatch warnings (indentation and alignment) Changes in v4: - Split the patch into two separate patches: * DeviceTree bindings documentation * Implementation changes - Fixed warnings reported by checkpatch Changes in v3: - Added documentation for the new property in DeviceTree bindings - https://lore.kernel.org/all/6a92ca86-ad6b-4d49-af6e-1ed7651b8ab8@linux.microsoft.com/ Changes in v2: - Rebased on hyperv-next branch as requested by maintainers - Added details about the property name format in the commit message - https://lore.kernel.org/all/096edaf7-cc90-42b6-aff4-c5f088574e1e@linux.microsoft.com/ Changes in v1: - Initial submission - https://lore.kernel.org/all/6acee4bf-cb04-43b9-9476-e8d811d26dfd@linux.microsoft.com/ Testing: - Tested on Microsoft Hyper-V - Verified with and without the DeviceTree property - Confirmed proper fallback to version-based connection ID selection - Validated binding documentation with dt_binding_check Hardik Garg (2): dt-bindings: microsoft: Add vmbus message-connection-id property Drivers: hv: vmbus: retrieve connection-id from DeviceTree .../devicetree/bindings/bus/microsoft,vmbus.yaml | 12 ++++++++++++ drivers/hv/connection.c | 7 +++++-- drivers/hv/vmbus_drv.c | 8 ++++++++ 3 files changed, 25 insertions(+), 2 deletions(-) -- 2.34.1
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