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lguest: export symbols for lguest as a module

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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>
This commit is contained in:
Rusty Russell 2007-07-19 01:49:21 -07:00 • committed by Linus Torvalds
parent 57deb52622
commit 5992b6dac0
4 changed files with 5 additions and 0 deletions
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2
mm/vmalloc.c
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@ -164,6 +164,7 @@ int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
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 @@ struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
{
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