diff options
Diffstat (limited to 'payloads/libpayload/arch/x86/exception.c')
| -rw-r--r-- | payloads/libpayload/arch/x86/exception.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/payloads/libpayload/arch/x86/exception.c b/payloads/libpayload/arch/x86/exception.c index 1fa1304f62..983a9f3bd2 100644 --- a/payloads/libpayload/arch/x86/exception.c +++ b/payloads/libpayload/arch/x86/exception.c @@ -171,9 +171,14 @@ void exception_dispatch(void) if (handlers[vec]) { handlers[vec](vec); - if (IS_ENABLED(CONFIG_LP_ENABLE_APIC)) - apic_eoi(vec); - return; + goto success; + } else if (vec >= EXC_COUNT + && IS_ENABLED(CONFIG_LP_IGNORE_UNKNOWN_INTERRUPTS)) { + goto success; + } else if (vec >= EXC_COUNT + && IS_ENABLED(CONFIG_LP_LOG_UNKNOWN_INTERRUPTS)) { + printf("Ignoring interrupt vector %u\n", vec); + goto success; } die_if(vec >= EXC_COUNT || !names[vec], "Bad exception vector %u\n", @@ -181,7 +186,14 @@ void exception_dispatch(void) dump_exception_state(); dump_stack(exception_state->regs.esp, 512); + /* We don't call apic_eoi because we don't want to ack the interrupt and + allow another interrupt to wake the processor. */ halt(); + return; + +success: + if (IS_ENABLED(CONFIG_LP_ENABLE_APIC)) + apic_eoi(vec); } void exception_init(void) |