From: Jinank Jain <jinankjain@xxxxxxxxxxxxxxxxxxx> Sent: Wednesday, November 2, 2022 9:36 AM > > Currently VMBus driver is not initialized for root partition but we need > to enable the VMBus driver for nested root partition. This is required > to expose VMBus devices to the L2 guest in the nested setup. > > Signed-off-by: Jinank Jain <jinankjain@xxxxxxxxxxxxxxxxxxx> > --- > drivers/hv/vmbus_drv.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c > index 8b2e413bf19c..2f0cf75e811b 100644 > --- a/drivers/hv/vmbus_drv.c > +++ b/drivers/hv/vmbus_drv.c > @@ -2723,7 +2723,7 @@ static int __init hv_acpi_init(void) > if (!hv_is_hyperv_initialized()) > return -ENODEV; > > - if (hv_root_partition) > + if (hv_root_partition && !hv_nested) Note that this code must compile and run when Linux is built to run as a guest on Hyper-V for ARM64. There's currently no definition for hv_nested on the ARM64 side, so the compile will fail. But per my comments in Patch 1 in this series, using the same technique as for hv_root_partition in hv_common.c should solve the ARM64 problem as well. > return 0; > > /* > -- > 2.25.1
