From fdacfb24f0e6b826e1b87ee9c045c07d86760b67 Mon Sep 17 00:00:00 2001
From: Philipp Oppermann <dev@phil-opp.com>
Date: Tue, 18 Apr 2017 12:27:24 +0200
Subject: [PATCH] Fix boot loop by identity mapping the vga buffer

---
 src/memory/paging/mod.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/memory/paging/mod.rs b/src/memory/paging/mod.rs
index 8c23586b..fd97a4c0 100644
--- a/src/memory/paging/mod.rs
+++ b/src/memory/paging/mod.rs
@@ -181,6 +181,10 @@ pub fn remap_the_kernel<A>(allocator: &mut A, boot_info: &BootInformation)
                 mapper.identity_map(frame, flags, allocator);
             }
         }
+
+        // identity map the VGA text buffer
+        let vga_buffer_frame = Frame::containing_address(0xb8000);
+        mapper.identity_map(vga_buffer_frame, WRITABLE, allocator);
     });
 
     let old_table = active_table.switch(new_table);