diff options
Diffstat (limited to 'drivers/lguest/switcher.S')
| -rw-r--r-- | drivers/lguest/switcher.S | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/lguest/switcher.S b/drivers/lguest/switcher.S index eadd4cc..e7cb8c1 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" |
