linux-kernel - [tip: x86/cc] x86/apic: Mark acpi_mp_wake_* variables as __ro_after

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Date: Tue, 18 Jun 2024 14:01:43 -0000
From: "tip-bot2 for Kirill A. Shutemov" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 "Borislav Petkov (AMD)" <bp@...en8.de>, Baoquan He <bhe@...hat.com>,
 Thomas Gleixner <tglx@...utronix.de>, Kai Huang <kai.huang@...el.com>,
 "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, Tao Liu <ltao@...hat.com>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject:
 [tip: x86/cc] x86/apic: Mark acpi_mp_wake_* variables as __ro_after_init

The following commit has been merged into the x86/cc branch of tip:

Commit-ID:     24dd05da8c7995cb2016b8f4da631c557aa6b40d
Gitweb:        https://git.kernel.org/tip/24dd05da8c7995cb2016b8f4da631c557aa6b40d
Author:        Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
AuthorDate:    Fri, 14 Jun 2024 12:58:47 +03:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Mon, 17 Jun 2024 17:45:28 +02:00

x86/apic: Mark acpi_mp_wake_* variables as __ro_after_init

acpi_mp_wake_mailbox_paddr and acpi_mp_wake_mailbox are initialized once during
ACPI MADT init and never changed.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Reviewed-by: Baoquan He <bhe@...hat.com>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Kai Huang <kai.huang@...el.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Tested-by: Tao Liu <ltao@...hat.com>
Link: https://lore.kernel.org/r/20240614095904.1345461-3-kirill.shutemov@linux.intel.com
---
 arch/x86/kernel/acpi/madt_wakeup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/acpi/madt_wakeup.c b/arch/x86/kernel/acpi/madt_wakeup.c
index 7f164d3..cf79ea6 100644
--- a/arch/x86/kernel/acpi/madt_wakeup.c
+++ b/arch/x86/kernel/acpi/madt_wakeup.c
@@ -6,10 +6,10 @@
 #include <asm/processor.h>

 /* Physical address of the Multiprocessor Wakeup Structure mailbox */
-static u64 acpi_mp_wake_mailbox_paddr;
+static u64 acpi_mp_wake_mailbox_paddr __ro_after_init;

 /* Virtual address of the Multiprocessor Wakeup Structure mailbox */
-static struct acpi_madt_multiproc_wakeup_mailbox *acpi_mp_wake_mailbox;
+static struct acpi_madt_multiproc_wakeup_mailbox *acpi_mp_wake_mailbox __ro_after_init;

 static int acpi_wakeup_cpu(u32 apicid, unsigned long start_ip)
 {