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xen: replace callers of alloc_vm_area()/free_vm_area() with xen_ prefixed one

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Don't use alloc_vm_area()/free_vm_area() directly, instead define
xen_alloc_vm_area()/xen_free_vm_area() and use them.

alloc_vm_area()/free_vm_area() are used to allocate/free area which
are for grant table mapping. Xen/x86 grant table is based on virtual
address so that alloc_vm_area()/free_vm_area() are suitable.
On the other hand Xen/ia64 (and Xen/powerpc) grant table is based on
pseudo physical address (guest physical address) so that allocation
should be done differently.
The original version of xenified Linux/IA64 have its own
allocate_vm_area()/free_vm_area() definitions which don't allocate vm area
contradictory to those names.
Now vanilla Linux already has its definitions so that it's impossible
to have IA64 definitions of allocate_vm_area()/free_vm_area().
Instead introduce xen_allocate_vm_area()/xen_free_vm_area() and use them.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Isaku Yamahata 2008-04-02 10:53:59 -07:00 committed by Ingo Molnar
parent 20e71f2edb
commit 5f0ababbf4
4 changed files with 12 additions and 4 deletions
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2
drivers/xen/grant-table.c
View file

@ -482,7 +482,7 @@ static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
if (shared == NULL) {
struct vm_struct *area;
area = alloc_vm_area(PAGE_SIZE * max_nr_grant_frames());
area = xen_alloc_vm_area(PAGE_SIZE * max_nr_grant_frames());
BUG_ON(area == NULL);
shared = area->addr;
}

6
drivers/xen/xenbus/xenbus_client.c
View file

@ -399,7 +399,7 @@ int xenbus_map_ring_valloc(struct xenbus_device *dev, int gnt_ref, void **vaddr)
*vaddr = NULL;
area = alloc_vm_area(PAGE_SIZE);
area = xen_alloc_vm_area(PAGE_SIZE);
if (!area)
return -ENOMEM;
@ -409,7 +409,7 @@ int xenbus_map_ring_valloc(struct xenbus_device *dev, int gnt_ref, void **vaddr)
BUG();
if (op.status != GNTST_okay) {
free_vm_area(area);
xen_free_vm_area(area);
xenbus_dev_fatal(dev, op.status,
"mapping in shared page %d from domain %d",
gnt_ref, dev->otherend_id);
@ -508,7 +508,7 @@ int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr)
BUG();
if (op.status == GNTST_okay)
free_vm_area(area);
xen_free_vm_area(area);
else
xenbus_dev_error(dev, op.status,
"unmapping page at handle %d error %d",

7
include/asm-x86/xen/grant_table.h Normal file
View file

@ -0,0 +1,7 @@
#ifndef __XEN_GRANT_TABLE_H
#define __XEN_GRANT_TABLE_H
#define xen_alloc_vm_area(size) alloc_vm_area(size)
#define xen_free_vm_area(area) free_vm_area(area)
#endif /* __XEN_GRANT_TABLE_H */

1
include/xen/grant_table.h
View file

@ -39,6 +39,7 @@
#include <asm/xen/hypervisor.h>
#include <xen/interface/grant_table.h>
#include <asm/xen/grant_table.h>
/* NR_GRANT_FRAMES must be less than or equal to that configured in Xen */
#define NR_GRANT_FRAMES 4