lguest: the host code

This is the code for the "lg.ko" module, which allows lguest guests to
be launched.

[akpm@linux-foundation.org: update for futex-new-private-futexes]
[akpm@linux-foundation.org: build fix]
[jmorris@namei.org: lguest: use hrtimers]
[akpm@linux-foundation.org: x86_64 build fix]
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/lguest/lguest_asm.S b/drivers/lguest/lguest_asm.S
index 5ac3d20bb184..00046c57b5ba 100644
--- a/drivers/lguest/lguest_asm.S
+++ b/drivers/lguest/lguest_asm.S
@@ -10,7 +10,8 @@
  * This is where we begin: we have a magic signature which the launcher looks
  * for.  The plan is that the Linux boot protocol will be extended with a
  * "platform type" field which will guide us here from the normal entry point,
- * but for the moment this suffices.
+ * but for the moment this suffices.  We pass the virtual address of the boot
+ * info to lguest_init().
  *
  * We put it in .init.text will be discarded after boot.
  */
@@ -18,6 +19,8 @@
 .ascii "GenuineLguest"
         /* Set up initial stack. */
         movl $(init_thread_union+THREAD_SIZE),%esp
+        movl %esi, %eax
+        addl $__PAGE_OFFSET, %eax
         jmp lguest_init
 
 /* The templates for inline patching. */