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Message-ID: <Y2Nnbs7o7aRd/E07@anrayabh-desk>
Date: Thu, 3 Nov 2022 12:32:06 +0530
From: Anirudh Rayabharam <anrayabh@...ux.microsoft.com>
To: Jinank Jain <jinankjain@...ux.microsoft.com>
Cc: jinankjain@...rosoft.com, kys@...rosoft.com,
haiyangz@...rosoft.com, sthemmin@...rosoft.com, wei.liu@...nel.org,
decui@...rosoft.com, tglx@...utronix.de, mingo@...hat.com,
bp@...en8.de, dave.hansen@...ux.intel.com, x86@...nel.org,
hpa@...or.com, arnd@...db.de, peterz@...radead.org,
jpoimboe@...nel.org, seanjc@...gle.com,
kirill.shutemov@...ux.intel.com, ak@...ux.intel.com,
sathyanarayanan.kuppuswamy@...ux.intel.com,
linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arch@...r.kernel.org
Subject: Re: [PATCH v2 4/5] hv: Enable vmbus driver for nested root partition
On Wed, Nov 02, 2022 at 04:36:01PM +0000, Jinank Jain wrote:
> 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.
Perhaps more importantly, this is required so that L2 _root_ can use the
VMBus devices.
>
> Signed-off-by: Jinank Jain <jinankjain@...ux.microsoft.com>
> ---
> 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)
> return 0;
>
> /*
> --
> 2.25.1
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