From f2208aa12c27bfada3c15c550c03ca81d42dcac2 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 22 Mar 2024 19:56:39 +0100
Subject: [PATCH] x86/mpparse: Register APIC address only once
The APIC address is registered twice. First during the early detection and
afterwards when actually scanning the table for APIC IDs. The APIC and
topology core warn about the second attempt.
Restrict it to the early detection call.
Fixes: 81287ad65da5 ("x86/apic: Sanitize APIC address setup")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240322185305.297774848@linutronix.de
---
arch/x86/kernel/mpparse.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 1ccd30c8246fa..e89171b0347a6 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -197,12 +197,12 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
if (!smp_check_mpc(mpc, oem, str))
return 0;
- /* Initialize the lapic mapping */
- if (!acpi_lapic)
- register_lapic_address(mpc->lapic);
-
- if (early)
+ if (early) {
+ /* Initialize the lapic mapping */
+ if (!acpi_lapic)
+ register_lapic_address(mpc->lapic);
return 1;
+ }
/* Now process the configuration blocks. */
while (count < mpc->length) {
--
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