RE: [PATCH v1 2/8] iommu: Introduce a new iommu_group_replace_domain() API

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> From: Nicolin Chen <nicolinc@xxxxxxxxxx>
> Sent: Saturday, February 4, 2023 1:45 AM
> 
> On Fri, Feb 03, 2023 at 08:26:44AM +0000, Tian, Kevin wrote:
> 
> > > +/**
> > > + * iommu_group_replace_domain - replace the domain that a group is
> > > attached to
> > > + * @new_domain: new IOMMU domain to replace with
> > > + * @group: IOMMU group that will be attached to the new domain
> > > + *
> > > + * This API allows the group to switch domains without being forced to
> go to
> > > + * the blocking domain in-between.
> > > + *
> > > + * If the attached domain is a core domain (e.g. a default_domain), it will
> act
> > > + * just like the iommu_attach_group().
> >
> > I think you meant "the currently-attached domain", which implies a
> > 'detached' state as you replied to Baolu.
> 
> Hmm, I don't see an implication, since we only have either
> "the attached domain" or "a new domain" in the context?

probably just me reading it as "the newly attached domain". 😊

> 
> With that being said, I can add "currently" in v2:
>  * If the currently attached domain is a core domain (e.g. a default_domain),
>  * it will act just like the iommu_attach_group().
> 

this is clearer.




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