Re: [PATCH] VT-d: fix caching mode IOTLB flushing

[Paul Durrant <xadimgnik@xxxxxxxxx>]

On 19/08/2021 09:05, Jan Beulich wrote:
> While for context cache entry flushing use of did 0 is indeed correct
> (after all upon reading the context entry the IOMMU wouldn't know any
> domain ID if the entry is not present, and hence a surrogate one needs
> to be used), for IOTLB entries the normal domain ID (from the [present]
> context entry) gets used. See sub-section "IOTLB" of section "Address
> Translation Caches" in the VT-d spec.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Paul Durrant <paul@xxxxxxx>