diff options
Diffstat (limited to 'src/cpu/x86/lapic')
| -rw-r--r-- | src/cpu/x86/lapic/lapic.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/cpu/x86/lapic/lapic.c b/src/cpu/x86/lapic/lapic.c index bd2fa67afd..a346bc1b14 100644 --- a/src/cpu/x86/lapic/lapic.c +++ b/src/cpu/x86/lapic/lapic.c @@ -47,9 +47,11 @@ static void lapic_virtual_wire_mode_init(void) */ lapic_update32(LAPIC_TASKPRI, ~LAPIC_TPRI_MASK, 0); - /* Put the local APIC in virtual wire mode */ + /* Set spurious interrupt vector to 0 and keep LAPIC enabled to + be able to clear LVT register mask bits. */ lapic_update32(LAPIC_SPIV, ~LAPIC_VECTOR_MASK, LAPIC_SPIV_ENABLE); + /* Put the local APIC in virtual wire mode */ uint32_t mask = LAPIC_LVT_MASKED | LAPIC_LVT_LEVEL_TRIGGER | LAPIC_LVT_REMOTE_IRR | LAPIC_INPUT_POLARITY | LAPIC_SEND_PENDING | LAPIC_LVT_RESERVED_1 | LAPIC_DELIVERY_MODE_MASK; |