Re: [PATCH 1/5] iommu/vt-d: Block force-snoop domain attaching if no SC support

[Jason Gunthorpe]

On Sun, May 01, 2022 at 07:24:30PM +0800, Lu Baolu wrote:
> In the attach_dev callback of the default domain ops, if the domain has
> been set force_snooping, but the iommu hardware of the device does not
> support SC(Snoop Control) capability, the callback should block it and
> return a corresponding error code.
> 
> Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> ---
>  drivers/iommu/intel/iommu.c | 3 +++
>  1 file changed, 3 insertions(+)

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

Jason