This is a note to let you know that I've just added the patch titled
ACPICA: Add support for MADT online enabled bit
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpica-add-support-for-madt-online-enabled-bit.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6bbfb39a4aeced79feedb2cefc8bc3a207df6126
Author: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Wed Sep 8 16:41:45 2021 -0500
ACPICA: Add support for MADT online enabled bit
[ Upstream commit 435a8dc8d9b9d91e625901fea5b5695b9b976d84 ]
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@xxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Stable-dep-of: 128b0c9781c9 ("x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index a47b32a5cbdeb..074449cb11a17 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -978,6 +978,7 @@ 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) */
