netdev - [PATCH v1 0/2] Fix CONFIG_HYPERV and vmbus related anamoly

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Message-Id: <20250906010952.2145389-1-mrathor@linux.microsoft.com>
Date: Fri,  5 Sep 2025 18:09:50 -0700
From: Mukesh Rathor <mrathor@...ux.microsoft.com>
To: dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	linux-input@...r.kernel.org,
	linux-hyperv@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-pci@...r.kernel.org,
	linux-scsi@...r.kernel.org,
	linux-fbdev@...r.kernel.org,
	linux-arch@...r.kernel.org,
	virtualization@...ts.linux.dev
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Subject: [PATCH v1 0/2] Fix CONFIG_HYPERV and vmbus related anamoly

At present, drivers/Makefile will subst =m to =y for CONFIG_HYPERV
for hv subdir. Also, drivers/hv/Makefile replaces =m to =y to build in
hv_common.c that is needed for the drivers. Moreover, vmbus driver is
built if CONFIG_HYPER is set, either loadable or builtin.

This is not a good approach. CONFIG_HYPERV is really an umbrella
config that encompasses builtin code and various other things and not
a dedicated config option for VMBus. VMBus should really have a config
option just like CONFIG_HYPERV_BALLOON etc. This small series introduces
CONFIG_HYPERV_VMBUS to build VMBus driver and make that distinction
explicit. With that CONFIG_HYPERV could be changed to bool.

For now, hv_common.c is left as is to reduce conflicts for upcoming
patches, but once merges are mostly done, that and some others should
be moved to virt/hyperv directory.

V1:
 o Change subject from hyper-v to "Drivers: hv:"
 o Rewrite commit messages paying attention to VMBus and not vmbus
 o Change some wordings in Kconfig
 o Make new VMBUS config option default to HYPERV option for a smoother
   transition

Mukesh Rathor (2):
  Driver: hv: Add CONFIG_HYPERV_VMBUS option
  Drivers: hv: Make CONFIG_HYPERV bool

 drivers/Makefile               |  2 +-
 drivers/gpu/drm/Kconfig        |  2 +-
 drivers/hid/Kconfig            |  2 +-
 drivers/hv/Kconfig             | 15 +++++++++++----
 drivers/hv/Makefile            |  4 ++--
 drivers/input/serio/Kconfig    |  4 ++--
 drivers/net/hyperv/Kconfig     |  2 +-
 drivers/pci/Kconfig            |  2 +-
 drivers/scsi/Kconfig           |  2 +-
 drivers/uio/Kconfig            |  2 +-
 drivers/video/fbdev/Kconfig    |  2 +-
 include/asm-generic/mshyperv.h |  8 +++++---
 net/vmw_vsock/Kconfig          |  2 +-
 13 files changed, 29 insertions(+), 20 deletions(-)

-- 
2.36.1.vfs.0.0