[RFC PATCH v5 1/4] lib: sbi_domain: Add domain register finalize notifier

[Anup Patel]

On Tue, Sep 22, 2026 at 10:13 PM Rahul Pathak
<rahul.pathak at oss.qualcomm.com> wrote:
>
> On Tue, Sep 22, 2026 at 1:33 PM Anup Patel <anup.patel at oss.qualcomm.com> wrote:
> >
> > On Fri, Sep 18, 2026 at 9:08 AM Rahul Pathak
> > <rahul.pathak at oss.qualcomm.com> wrote:
> > >
> > > sbi domain registeration notifier is invoked when
> > > memory regions of the domains are not finalized. The root
> > > domain is registered early and the drivers keep adding
> > > the regions until sbi_domain_finalize() is called. Such regions
> > > are added to the root after root domain is already registered
> > > and notification for that has already been sent.
> > >
> > > Per-domain configuration which is based on the final memory
> > > regions of the domains especially the root domain is not
> > > possible only with a domain register notifier.
> > >
> > > Add a domain finalize notifier for such case which is called
> > > for every domain once all the domains are already registered and
> > > their memory regions are finalized.
> > >
> > > Signed-off-by: Rahul Pathak <rahul.pathak at oss.qualcomm.com>
> >
> > Clearly, MPT table is per-domain state so why not use sbi_domain_state
> > for this ??
> >
>
> The v4 had used sbi_domain_state only for this
> https://lists.infradead.org/pipermail/opensbi/2026-August/010446.html
>
> but as suggested by Pawandeep to reuse the inflight notifier support
> for domain events, I dropped that to use a notifier event.
>
> https://lists.infradead.org/pipermail/opensbi/2026-August/010454.html

Actually, both notifier and sbi_domain_state will work in this
case but sbi_domain_state should be preferred because
smmpt does create a per-domain state which is the MPT
table.

Regards,
Anup