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[PATCH 1/4] ioapic: Enable processor focus to BSP
From: |
Damien Zammit |
Subject: |
[PATCH 1/4] ioapic: Enable processor focus to BSP |
Date: |
Mon, 5 Apr 2021 15:29:13 +1000 |
---
i386/i386/apic.h | 1 +
i386/i386at/ioapic.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/i386/i386/apic.h b/i386/i386/apic.h
index 83f7776c..d63dbfcc 100644
--- a/i386/i386/apic.h
+++ b/i386/i386/apic.h
@@ -173,6 +173,7 @@ extern inline void unmask_irq (unsigned int irq_nr);
# define IMCR_USE_APIC 1
#define LAPIC_ENABLE 0x100
+#define LAPIC_FOCUS 0x200
#define LAPIC_NMI 0x400
#define LAPIC_DISABLE 0x10000
#define LAPIC_TIMER_PERIODIC 0x20000
diff --git a/i386/i386at/ioapic.c b/i386/i386at/ioapic.c
index 016bd941..16836016 100644
--- a/i386/i386at/ioapic.c
+++ b/i386/i386at/ioapic.c
@@ -378,6 +378,9 @@ ioapic_configure(void)
global_enable_apic();
+ /* Enable IOAPIC processor focus */
+ lapic->spurious_vector.r |= LAPIC_FOCUS;
+
/* Enable IOAPIC interrupts */
lapic->spurious_vector.r |= LAPIC_ENABLE;
--
2.30.1