linux-kernel - [PATCH v3 2/3] ACPI/table: Print MADT Wake table information

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Date:   Sun, 25 Apr 2021 19:39:40 -0700
From:   Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     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>
Cc:     Len Brown <lenb@...nel.org>, Robert Moore <robert.moore@...el.com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        linux-acpi@...r.kernel.org, devel@...ica.org,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: [PATCH v3 2/3] ACPI/table: Print MADT Wake table information

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.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.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