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 eadd4cc299d2..e7cb8c123558 100644 --- a/drivers/lguest/switcher.S +++ b/drivers/lguest/switcher.S | |||
| @@ -1,10 +1,11 @@ | |||
| 1 | /* This code sits at 0xFFC00000 to do the low-level guest<->host switch. | 1 | /*P:900 This is the Switcher: code which sits at 0xFFC00000 to do the low-level |
| 2 | * Guest<->Host switch. It is as simple as it can be made, but it's naturally | ||
| 3 | * very specific to x86. | ||
| 4 | * | ||
| 5 | * You have now completed Preparation. If this has whet your appetite; if you | ||
| 6 | * are feeling invigorated and refreshed then the next, more challenging stage | ||
| 7 | * can be found in "make Guest". :*/ | ||
| 2 | 8 | ||
| 3 | There is are two pages above us for this CPU (struct lguest_pages). | ||
| 4 | The second page (struct lguest_ro_state) becomes read-only after the | ||
| 5 | context switch. The first page (the stack for traps) remains writable, | ||
| 6 | but while we're in here, the guest cannot be running. | ||
| 7 | */ | ||
| 8 | #include <linux/linkage.h> | 9 | #include <linux/linkage.h> |
| 9 | #include <asm/asm-offsets.h> | 10 | #include <asm/asm-offsets.h> |
| 10 | #include "lg.h" | 11 | #include "lg.h" |