[PATCH 1/2] lguest preparation: EXPORT_SYMBOL_GPL 5 functions
From: Rusty Russell <hidden>
Date: 2007-02-12 03:42:24
Also in:
lkml
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 <redacted> ===================================================================
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c@@ -1054,6 +1054,7 @@ asmlinkage void math_state_restore(void) thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */ tsk->fpu_counter++; } +EXPORT_SYMBOL_GPL(math_state_restore); #ifndef CONFIG_MATH_EMULATION
===================================================================
--- a/kernel/fork.c
+++ b/kernel/fork.c@@ -126,6 +126,7 @@ void __put_task_struct(struct task_struc if (!profile_handoff_task(tsk)) free_task(tsk); } +EXPORT_SYMBOL_GPL(__put_task_struct); void __init fork_init(unsigned long mempages) {
===================================================================
--- a/mm/memory.c
+++ b/mm/memory.c@@ -2692,3 +2692,4 @@ int access_process_vm(struct task_struct return buf - old_buf; } +EXPORT_SYMBOL_GPL(access_process_vm);
===================================================================
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c@@ -159,6 +159,7 @@ int map_vm_area(struct vm_struct *area, 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,
@@ -237,6 +238,7 @@ struct vm_struct *__get_vm_area(unsigned { 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