[PATCHv11 02/19] x86/apic: Mark acpi_mp_wake_* variables as __ro_after_init

From: Kirill A. Shutemov
Date: Tue May 28 2024 - 05:57:45 EST


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

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Acked-by: Kai Huang <kai.huang@xxxxxxxxx>
Reviewed-by: Baoquan He <bhe@xxxxxxxxxx>
Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Tao Liu <ltao@xxxxxxxxxx>
---
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 7f164d38bd0b..cf79ea6f3007 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)
{
--
2.43.0