Re: [PATCH v4 0/3] hw/acpi: add indication for i8042 in IA-PC boot flags of the FADT table

["Michael S. Tsirkin" <mst@redhat.com>]

On Fri, Mar 04, 2022 at 04:04:13PM +0530, Ani Sinha wrote:
> On Fri, Mar 4, 2022 at 3:56 PM Michael S. Tsirkin <mst@redhat.com> wrote:
> >
> > On Mon, Feb 28, 2022 at 10:17:30PM +0200, Liav Albani wrote:
> > > This can allow the guest OS to determine more easily if i8042 controller
> > > is present in the system or not, so it doesn't need to do probing of the
> > > controller, but just initialize it immediately, before enumerating the
> > > ACPI AML namespace.
> > >
> > > To allow "flexible" indication, I don't hardcode the bit at location 1
> > > as on in the IA-PC boot flags, but try to search for i8042 on the ISA
> > > bus to verify it exists in the system.
> > >
> > > Why this is useful you might ask - this patch allows the guest OS to
> > > probe and use the i8042 controller without decoding the ACPI AML blob
> > > at all. For example, as a developer of the SerenityOS kernel, I might
> > > want to allow people to not try to decode the ACPI AML namespace (for
> > > now, we still don't support ACPI AML as it's a work in progress), but
> > > still to not probe for the i8042 but just use it after looking in the
> > > IA-PC boot flags in the ACPI FADT table.
> >
> > OK still waiting for v5.
> 
> Since the time is tight, I could quickly make the changes in patch 2
> and send it over.

Sure.

> I believe 8th is the last date for new changes.

Yes.

-- 
MST