Linux Virtualization - Jan 2021 - [PATCH v5 03/16] Drivers: hv: vmbus: skip VMBus initialization if Linux is root

On Wed, Jan 20, 2021 at 7:01 AM Wei Liu <wei.liu at kernel.org>
wrote:
>
> There is no VMBus and the other infrastructures initialized in
> hv_acpi_init when Linux is running as the root partition.
>
> Signed-off-by: Wei Liu <wei.liu at kernel.org>
> ---
> v3: Return 0 instead of -ENODEV.
> ---
>  drivers/hv/vmbus_drv.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> index 502f8cd95f6d..ee27b3670a51 100644
> --- a/drivers/hv/vmbus_drv.c
> +++ b/drivers/hv/vmbus_drv.c
> @@ -2620,6 +2620,9 @@ static int __init hv_acpi_init(void)
>         if (!hv_is_hyperv_initialized())
>                 return -ENODEV;
>
> +       if (hv_root_partition)
> +               return 0;
> +
Reviewed-by: Pavel Tatashin <pasha.tatashin at soleen.com>