From 9ad0eafcf7e2f3e0532666c5353b0f5294401b06 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Tue, 20 Jul 2021 21:38:09 +0200
Subject: per-process virtual memory

VGA is only mapped into the virtual memory because there are no other
ways of interacting with the OS.
---
 src/init/main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/init/main.c')

diff --git a/src/init/main.c b/src/init/main.c
index e6188ac..ce1600c 100644
--- a/src/init/main.c
+++ b/src/init/main.c
@@ -6,5 +6,8 @@ int main() {
 	uint8_t *vga = (void*) 0xB8000;
 	for (int i = 0; i < 80 * 25; i++)
 		vga[(i << 1) + 1] = 0x4e;
-	for (;;);
+
+	// try to mess with kernel memory
+	uint8_t *kernel = (void*) 0x100000;
+	*kernel = 0; // should segfault
 }
-- 
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