linux-kernel - [RFC v2 17/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Structure

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Date:   Mon, 26 Apr 2021 11:01:44 -0700
From:   Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Tony Luck <tony.luck@...el.com>
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
        Kuppuswamy Sathyanarayanan <knsathya@...nel.org>,
        Raj Ashok <ashok.raj@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        linux-kernel@...r.kernel.org, Erik Kaneda <erik.kaneda@...el.com>,
        Bob Moore <robert.moore@...el.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: [RFC v2 17/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Structure

From: Erik Kaneda <erik.kaneda@...el.com>

ACPICA commit b9eb6f3a19b816824d6f47a6bc86fd8ce690e04b

Link: https://github.com/acpica/acpica/commit/b9eb6f3a
Signed-off-by: Erik Kaneda <erik.kaneda@...el.com>
Signed-off-by: Bob Moore <robert.moore@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 include/acpi/actbl2.h | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index d6478c430c99..b2362600b9ff 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -516,7 +516,8 @@ enum acpi_madt_type {
 	ACPI_MADT_TYPE_GENERIC_MSI_FRAME = 13,
 	ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR = 14,
 	ACPI_MADT_TYPE_GENERIC_TRANSLATOR = 15,
-	ACPI_MADT_TYPE_RESERVED = 16	/* 16 and greater are reserved */
+	ACPI_MADT_TYPE_MULTIPROC_WAKEUP = 16,
+	ACPI_MADT_TYPE_RESERVED = 17	/* 17 and greater are reserved */
 };
 
 /*
@@ -723,6 +724,15 @@ struct acpi_madt_generic_translator {
 	u32 reserved2;
 };
 
+/* 16: Multiprocessor wakeup (ACPI 6.4) */
+
+struct acpi_madt_multiproc_wakeup {
+	struct acpi_subtable_header header;
+	u16 mailbox_version;
+	u32 reserved;		/* reserved - must be zero */
+	u64 base_address;
+};
+
 /*
  * Common flags fields for MADT subtables
  */
-- 
2.25.1