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

[Rahul Pathak]

On Tue, Sep 22, 2026 at 10:24 PM Anup Patel <anup.patel at oss.qualcomm.com> wrote:
>
> 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.
>

Sure, will revert to the sbi_domain_state way from v4