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

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@intel.com

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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@linux.intel.com

Hi Jason,

Given that this fixes a commit in the iommufd tree, can you please pick this fix as well?

Done

Thanks Jason