stos/amd64: cpu: Ignore non online capable processors

Signed-off-by: Chloe M. <chloe@mensia.org>

paw/stos/arch/amd64/cpu/mp.c

@@ -19,6 +19,9 @@
 #define MP_LOG_CAP 4
 #define MP_DEBUG 1
 
+/* Local APIC flags */
+#define LAPIC_ONLINE_CAPABLE BIT(1)
+
 #define DTRACE(Fmt, ...) \
     TRACE("[ MP ]: " Fmt, ##__VA_ARGS__)
 
@@ -54,6 +57,14 @@ ApKick(ACPI_LOCAL_APIC *Lapic)
         return;
     }
 
+    /*
+     * Some processor entries may not be "online capable", if we
+     * encounter such entries, ignore it.
+     */
+    if (!ISSET(Lapic->Flags, LAPIC_ONLINE_CAPABLE)) {
+        return;
+    }
+
     /* Send an INIT IPI to the processor */
     MdLapicSendIpi(
         0,