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Diffstat (limited to 'drivers/lguest/switcher.S')
-rw-r--r--drivers/lguest/switcher.S13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/lguest/switcher.S b/drivers/lguest/switcher.S
index eadd4cc299d..e7cb8c12355 100644
--- a/drivers/lguest/switcher.S
+++ b/drivers/lguest/switcher.S
@@ -1,10 +1,11 @@
-/* This code sits at 0xFFC00000 to do the low-level guest<->host switch.
+/*P:900 This is the Switcher: code which sits at 0xFFC00000 to do the low-level
+ * Guest<->Host switch. It is as simple as it can be made, but it's naturally
+ * very specific to x86.
+ *
+ * You have now completed Preparation. If this has whet your appetite; if you
+ * are feeling invigorated and refreshed then the next, more challenging stage
+ * can be found in "make Guest". :*/
- There is are two pages above us for this CPU (struct lguest_pages).
- The second page (struct lguest_ro_state) becomes read-only after the
- context switch. The first page (the stack for traps) remains writable,
- but while we're in here, the guest cannot be running.
-*/
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include "lg.h"