[PATCH v2 3/3] hyperv: Add CONFIG_MSHV_ROOT to gate root partition support

[Easwar Hariharan]

On 2/20/2025 10:33 AM, Nuno Das Neves wrote:
> CONFIG_MSHV_ROOT allows kernels built to run as a normal Hyper-V guest
> to exclude the root partition code, which is expected to grow
> significantly over time.
> 
> This option is a tristate so future driver code can be built as a
> (m)odule, allowing faster development iteration cycles.
> 
> If CONFIG_MSHV_ROOT is disabled, don't compile hv_proc.c, and stub
> hv_root_partition() to return false unconditionally. This allows the
> compiler to optimize away root partition code blocks since they will
> be disabled at compile time.
> 
> Signed-off-by: Nuno Das Neves <nunodasneves at linux.microsoft.com>
> ---
>  drivers/hv/Kconfig             | 16 ++++++++++++++++
>  drivers/hv/Makefile            |  3 ++-
>  include/asm-generic/mshyperv.h | 24 ++++++++++++++++++++----
>  3 files changed, 38 insertions(+), 5 deletions(-)

Looks good to me.

Reviewed-by: Easwar Hariharan <eahariha at linux.microsoft.com>