From 7105a2e104f2107b10bbd9b75814279810ab96f8 Mon Sep 17 00:00:00 2001
From: acevest <zhaoyanbai@126.com>
Date: Fri, 2 Jan 2026 22:01:22 +0800
Subject: [PATCH] =?utf8?q?=E6=8A=8A8253/8254=E7=9A=84=E6=97=B6=E9=92=9F?=
 =?utf8?q?=E4=B8=AD=E6=96=AD=E8=B7=AF=E7=94=B1=E5=88=B0CPU=200=E7=9A=840?=
 =?utf8?q?=E5=8F=B7=E4=B8=AD=E6=96=AD?=
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---
 kernel/apic.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/kernel/apic.c b/kernel/apic.c
index 90b13d2..7e7c050 100644
--- a/kernel/apic.c
+++ b/kernel/apic.c
@@ -302,9 +302,13 @@ void ioapic_init() {
     // TODO
     // iounmap(rcba_virt_base);
 
-    // 打开键盘中断
-    ioapic_rte_write(IOAPIC_RTE(1), 0x21);
     extern irq_chip_t ioapic_chip;
+    // 把8253的中断通过IOAPIC转发到CPU0的0号中断
+    // 8253/8254连在i8259的0号引脚，但连在IO APIC的2号引脚上
+    ioapic_rte_write(IOAPIC_RTE(2), 0x20 + 0);
+    // 把键盘中断通过IOAPIC转发到CPU0的1号中断
+    ioapic_rte_write(IOAPIC_RTE(1), 0x20 + 1);
+    irq_set_chip(0x00, &ioapic_chip);
     irq_set_chip(0x01, &ioapic_chip);
 }
 
-- 
2.47.0