From e6f471fb01a3f49660840ed9801fd30057c3f2ec Mon Sep 17 00:00:00 2001
From: sigsegv7 <ian@vegaa.systems>
Date: Wed, 4 Oct 2023 19:28:31 -0400
Subject: kernel/amd64: Add spinlock to cpu_info
Signed-off-by: sigsegv7 <ian@vegaa.systems>
---
sys/arch/amd64/lapic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
(limited to 'sys/arch/amd64')
diff --git a/sys/arch/amd64/lapic.c b/sys/arch/amd64/lapic.c
index 53a4fd5..76b0f87 100644
--- a/sys/arch/amd64/lapic.c
+++ b/sys/arch/amd64/lapic.c
@@ -249,10 +249,11 @@ lapic_init(void)
/* Register the timer for scheduler usage */
register_timer(TIMER_SCHED, &lapic_timer);
- /* Get the current processor, and calibrate LAPIC timer */
+ /* Get the current processor, and lock its structure */
cur_cpu = this_cpu();
CPU_INFO_LOCK(cur_cpu);
+ /* Calibrate timer */
lapic_timer_init(&tmr_freq);
cur_cpu->lapic_tmr_freq = tmr_freq;
@@ -260,5 +261,6 @@ lapic_init(void)
cur_cpu->lapic_id = lapic_get_id();
BSP_KINFO("BSP Local APIC ID: %d\n", cur_cpu->lapic_id);
+ CPU_INFO_UNLOCK(cur_cpu);
}
--
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