[PATCH v6 14/14] iommu/arm-smmu-v3: Set MEV bit in nested STE for DoS mitigations

[Pranjal Shrivastava]

On Tue, Feb 18, 2025 at 10:53:55AM -0800, Nicolin Chen wrote:
> > > Is MEV available only in nested mode? Otherwise it perhaps makes
> > > sense to turn it on in all configurations in IOMMUFD paths...
> > 
> > I think the arm-smmu-v3's iommufd implementation only supports nested
> > which could be the reason.
> 
> I guess what Kevin says is that non-nested STE should set the MEV
> as well, e.g. BYPASS and ABORT, and perhaps stage-1-only case too
> where the attaching domain = UNMANAGED.
> 

Ohh okay, got it. Thanks!

Praan