linux-kernel - Re: [PATCH v2 2/3] ACPI/table: Print MADT Wake table information

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Message-ID: <CAJZ5v0iwuqjPhceuO0dfq5zggpq9OHpv=bPtcZYhVtd-+-xyNQ@mail.gmail.com>
Date:   Fri, 23 Apr 2021 14:38:41 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc:     Rafael J Wysocki <rjw@...ysocki.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Len Brown <lenb@...nel.org>,
        Robert Moore <robert.moore@...el.com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "open list:ACPI COMPONENT ARCHITECTURE (ACPICA)" <devel@...ica.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "the arch/x86 maintainers" <x86@...nel.org>
Subject: Re: [PATCH v2 2/3] ACPI/table: Print MADT Wake table information

On Thu, Apr 22, 2021 at 11:47 PM Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@...ux.intel.com> wrote:
>
> When MADT is parsed, print MADT Wake table information as
> debug message. It will be useful to debug CPU boot issues
> related to MADT wake table.
>
> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>

This obviously depends on the ACPICA changes from the previous patch,
so I can pick it up when that material gets integrated.

For now

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

> ---
>  drivers/acpi/tables.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
> index 9d581045acff..206df4ad8b2b 100644
> --- a/drivers/acpi/tables.c
> +++ b/drivers/acpi/tables.c
> @@ -207,6 +207,17 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
>                 }
>                 break;
>
> +       case ACPI_MADT_TYPE_MULTIPROC_WAKEUP:
> +               {
> +                       struct acpi_madt_multiproc_wakeup *p;
> +
> +                       p = (struct acpi_madt_multiproc_wakeup *) header;
> +
> +                       pr_debug("MP Wake (Mailbox version[%d] base_address[%llx])\n",
> +                                p->mailbox_version, p->base_address);
> +               }
> +               break;
> +
>         default:
>                 pr_warn("Found unsupported MADT entry (type = 0x%x)\n",
>                         header->type);
> --
> 2.25.1
>