On Fri, May 06, 2022 at 08:00:43PM +0800, Kun(llfl) wrote:
> From: Sanjay Kumar <sanjay.k.kumar@xxxxxxxxx>
>
> ANBZ: #1105
What is this?
> commit 37764b952e1b39053defc7ebe5dcd8c4e3e78de9 upstream.
>
> This fixes a bug in context cache clear operation. The code was not
> following the correct invalidation flow. A global device TLB invalidation
> should be added after the IOTLB invalidation. At the same time, it
> uses the domain ID from the context entry. But in scalable mode, the
> domain ID is in PASID table entry, not context entry.
>
> Fixes: 7373a8cc38197 ("iommu/vt-d: Setup context and enable RID2PASID support")
> Cc: stable@xxxxxxxxxxxxxxx # v5.0+
Is this a 5.10 backport for us to pick up? What about 5.4?
thanks,
greg k-h
