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path: root/payloads/libpayload/arch/x86/exception.c
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Diffstat (limited to 'payloads/libpayload/arch/x86/exception.c')
-rw-r--r--payloads/libpayload/arch/x86/exception.c18
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)