Re: [PATCH] iommu/vt-d: Enhance capability check for nested parent domain allocation

[Jason Gunthorpe]

On Wed, Oct 25, 2023 at 09:10:08AM +0800, Baolu Lu wrote:
> On 10/24/23 11:00 PM, Yi Liu wrote:
> > This adds the scalable mode check before allocating the nested parent domain
> > as checking nested capability is not enough. User may turn off scalable mode
> > which also means no nested support even if the hardware supports it.
> > 
> > Fixes: c97d1b20d383 ("iommu/vt-d: Add domain_alloc_user op")
> > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx>
> > ---
> > v1: Based on Joao's dirty page tracking v6 https://github.com/jpemartins/linux/commits/iommufd-v6
> > ---
> >   drivers/iommu/intel/iommu.c | 2 +-
> >   drivers/iommu/intel/iommu.h | 2 ++
> >   2 files changed, 3 insertions(+), 1 deletion(-)
> 
> Reviewed-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> 
> Hi Jason,
> 
> Given that this fixes a commit in the iommufd tree, can you please pick
> this fix as well?

Done

Thanks
Jason