linux-kernel - Re: [PATCH v6 1/2] ACPI: tables: Add AGDI to the list of known table signatures

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Date:   Thu, 10 Mar 2022 09:14:40 +0000
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     Ilkka Koskinen <ilkka@...amperecomputing.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Hanjun Guo <guohanjun@...wei.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Len Brown <lenb@...nel.org>,
        Robert Moore <robert.moore@...el.com>,
        James Morse <james.morse@....com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        patches@...erecomputing.com, scott@...amperecomputing.com,
        Darren Hart <darren@...amperecomputing.com>
Subject: Re: [PATCH v6 1/2] ACPI: tables: Add AGDI to the list of known table
 signatures

On Wed, Mar 09, 2022 at 12:41:27PM -0800, Ilkka Koskinen wrote:
> 
> Hi Rafael,
> 
> On Wed, 9 Mar 2022, Rafael J. Wysocki wrote:
> > On Wed, Mar 9, 2022 at 3:08 AM Ilkka Koskinen
> > <ilkka@...amperecomputing.com> wrote:
> > > 
> > > Add AGDI to the list of known ACPI table signatures to allow the
> > > kernel to recognize it when upgrading tables via initrd.
> > > 
> > > Signed-off-by: Ilkka Koskinen <ilkka@...amperecomputing.com>
> > > Reviewed-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> > > ---
> > >  drivers/acpi/tables.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
> > > index 369eb998c3d1..ceee808f7f2a 100644
> > > --- a/drivers/acpi/tables.c
> > > +++ b/drivers/acpi/tables.c
> > > @@ -545,7 +545,7 @@ static const char table_sigs[][ACPI_NAMESEG_SIZE] __initconst = {
> > >         ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT,
> > >         ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT,
> > >         ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT,
> > > -       ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT };
> > > +       ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT, ACPI_SIG_AGDI };
> > > 
> > >  #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
> > 
> > I'm noticing that this depends on the linux-next-only commit
> > 783dedf41b79ac7a3a68b51cf6f88cbfd6dc3292, so it is probably better if
> > I apply it and the other patch in the series can be routed via ARM64.
> 
> Sounds good to me, thanks. The other patch needs commit dc4e8c07e9e2 ("ACPI:
> APEI: explicit init of HEST and GHES in apci_init()") in your bleeding edge
> branch to work but it hasn't been acked yet anyway.

It is best for both patches to go via Rafael's tree, given the
dependency above. I acked patch (2).

Thanks,
Lorenzo