From 4122de881d3b7f9e54563affd7564213d415d1e5 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Mon, 15 Sep 2025 12:27:01 -0400
Subject: kern/amd64: boot: Initialize I/O APIC *once*

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/arch/amd64/boot/boot_chip.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/sys/arch/amd64/boot/boot_chip.c')

diff --git a/src/sys/arch/amd64/boot/boot_chip.c b/src/sys/arch/amd64/boot/boot_chip.c
index 01d090c..679a759 100644
--- a/src/sys/arch/amd64/boot/boot_chip.c
+++ b/src/sys/arch/amd64/boot/boot_chip.c
@@ -33,6 +33,20 @@
 #include <machine/boot.h>
 #include <machine/i8259.h>
 #include <machine/ioapic.h>
+#include <stdbool.h>
+
+static void
+chipset_init(void)
+{
+    static bool once = false;
+
+    if (once) {
+        return;
+    }
+
+    once = true;
+    ioapic_init();
+}
 
 void
 platform_boot(void)
@@ -40,6 +54,6 @@ platform_boot(void)
     gdt_load();
     i8259_disable();
 
-    ioapic_init();
+    chipset_init();
     uart_init();
 }
-- 
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