From 20ae7d56b3545359bf19335dfbba60de7f899da3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Lov=C3=A9n?= <thomasloven@gmail.com>
Date: Fri, 16 Mar 2018 10:23:52 +0100
Subject: [PATCH] TODO - Distribute those changes earlier

---
 src/kernel/boot/kmain.c  | 12 +++++++++---
 src/kernel/proc/procmm.c |  8 ++++++++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/src/kernel/boot/kmain.c b/src/kernel/boot/kmain.c
index 4fdbc94..dbbd180 100644
--- a/src/kernel/boot/kmain.c
+++ b/src/kernel/boot/kmain.c
@@ -10,7 +10,9 @@
 
 void thread_function()
 {
-  while(1);
+  char *p = 0xBADC0FFEE;
+  while(1)
+    p[0] = 1;
 }
 
 
@@ -29,11 +31,15 @@ void kmain(uint64_t multiboot_magic, void *multiboot_data)
   cpu_init();
 
   struct process *p1 = new_process((void (*)(void))0x10000);
-  procmm_brk(p1, (void *)0x10010);
+  procmm_brk(p1, (void *)0x10100);
   memcpy_to_p4(p1->P4, (void *)0x10000, (void *)(uintptr_t)thread_function, 100);
-
   ready(p1);
 
+  struct process *p2 = new_process((void (*)(void))0x10000);
+  procmm_brk(p2, (void *)0x10100);
+  memcpy_to_p4(p2->P4, (void *)0x10000, (void *)(uintptr_t)thread_function, 100);
+  ready(p2);
+
   debug_ok("Boot \"Complete\"\n");
 
   start_scheduler();
diff --git a/src/kernel/proc/procmm.c b/src/kernel/proc/procmm.c
index 80eda43..3c8455c 100644
--- a/src/kernel/proc/procmm.c
+++ b/src/kernel/proc/procmm.c
@@ -50,6 +50,14 @@ registers *proc_pagefault(registers *r)
     return r;
   }
 
+  // Very uggly and very temporary way of signaling the kernel from a user mode process.
+  // TODO: REMOVE THIS CRAP!
+  if(read_cr2() == 0xBADC0FFEE)
+  {
+    debug("Bad signal from process %d\n", cpu->proc->pid);
+    yield();
+    return r;
+  }
   PANIC("Page fault in process\n");
   return r;
 }