linux-kernel - [PATCH v3 1/2] ACPICA: Add support for MADT online enabled bit

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Date:   Wed, 8 Sep 2021 16:41:45 -0500
From:   Mario Limonciello <mario.limonciello@....com>
To:     "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
CC:     Mario Limonciello <mario.limonciello@....com>,
        Robert Moore <robert.moore@...el.com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        Len Brown <lenb@...nel.org>,
        "open list:ACPI COMPONENT ARCHITECTURE (ACPICA)" 
        <linux-acpi@...r.kernel.org>,
        "open list:ACPI COMPONENT ARCHITECTURE (ACPICA)" <devel@...ica.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 1/2] ACPICA: Add support for MADT online enabled bit

The online enabled bit on newer ACPI implmentations will indicate
whether the CPU is hotpluggable.

Link: http://github.com/acpica/acpica/pull/708/
Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
 include/acpi/actbl2.h | 1 +
 1 file changed, 1 insertion(+)

Changes from v2:
 * Split into a separate patch from the acpica pull request

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 2069ac38a4e2..fae45e383987 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -808,6 +808,7 @@ struct acpi_madt_multiproc_wakeup_mailbox {
 /* MADT Local APIC flags */
 
 #define ACPI_MADT_ENABLED           (1)	/* 00: Processor is usable if set */
+#define ACPI_MADT_ONLINE_CAPABLE    (2)	/* 01: System HW supports enabling processor at runtime */
 
 /* MADT MPS INTI flags (inti_flags) */
 
-- 
2.25.1