Kernel: Add SMP IPI support

We can now properly initialize all processors without
crashing by sending SMP IPI messages to synchronize memory
between processors.

We now initialize the APs once we have the scheduler running.
This is so that we can process IPI messages from the other
cores.

Also rework interrupt handling a bit so that it's more of a
1:1 mapping. We need to allocate non-sharable interrupts for
IPIs.

This also fixes the occasional hang/crash because all
CPUs now synchronize memory with each other.

1 files changed, 1 insertions, 1 deletions

diff --git a/Kernel/Lock.cpp b/Kernel/Lock.cpp
index f7fa7512fb..1dd1bf6bf9 100644
--- a/Kernel/Lock.cpp
+++ b/Kernel/Lock.cpp
@@ -48,7 +48,7 @@ void Lock::lock(Mode mode)
     if (!are_interrupts_enabled()) {
         klog() << "Interrupts disabled when trying to take Lock{" << m_name << "}";
         dump_backtrace();
-        hang();
+        Processor::halt();
     }
     auto current_thread = Thread::current();
     for (;;) {