lguest: export symbols for lguest as a module
lguest does some fairly lowlevel things to support a host, which
normal modules don't need:
math_state_restore:
When the guest triggers a Device Not Available fault, we need
to be able to restore the FPU
__put_task_struct:
We need to hold a reference to another task for inter-guest
I/O, and put_task_struct() is an inline function which calls
__put_task_struct.
access_process_vm:
We need to access another task for inter-guest I/O.
map_vm_area & __get_vm_area:
We need to map the switcher shim (ie. monitor) at 0xFFC01000.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index d32fd4b..109ebbc 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -1056,6 +1056,7 @@
thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */
tsk->fpu_counter++;
}
+EXPORT_SYMBOL_GPL(math_state_restore);
#ifndef CONFIG_MATH_EMULATION
diff --git a/kernel/fork.c b/kernel/fork.c
index 4698389..e7a2d99 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -127,6 +127,7 @@
if (!profile_handoff_task(tsk))
free_task(tsk);
}
+EXPORT_SYMBOL_GPL(__put_task_struct);
void __init fork_init(unsigned long mempages)
{
diff --git a/mm/memory.c b/mm/memory.c
index 50dd3d1..8aace3d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2865,3 +2865,4 @@
return buf - old_buf;
}
+EXPORT_SYMBOL_GPL(access_process_vm);
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 213d5e5..3cee76a 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -164,6 +164,7 @@
flush_cache_vmap((unsigned long) area->addr, end);
return err;
}
+EXPORT_SYMBOL_GPL(map_vm_area);
static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long flags,
unsigned long start, unsigned long end,
@@ -242,6 +243,7 @@
{
return __get_vm_area_node(size, flags, start, end, -1, GFP_KERNEL);
}
+EXPORT_SYMBOL_GPL(__get_vm_area);
/**
* get_vm_area - reserve a contingous kernel virtual area