[PATCH 1/4] ioapic: Enable processor focus to BSP

[Damien Zammit]

---
 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