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xen: use generic functions instead of xen_{alloc, free}_vm_area()

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Replace calls to the Xen-specific xen_alloc_vm_area() and
xen_free_vm_area() functions with the generic equivalent
(alloc_vm_area() and free_vm_area()).

On x86, these were identical already.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
David Vrabel
2011-09-29 16:53:29 +01:00
committed by Konrad Rzeszutek Wilk
parent a102a9ece5
commit 4dcaebbf65
6 changed files with 4 additions and 103 deletions
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62
arch/ia64/xen/grant-table.c
View File

@@ -31,68 +31,6 @@
#include <asm/xen/hypervisor.h>
struct vm_struct *xen_alloc_vm_area(unsigned long size)
{
int order;
unsigned long virt;
unsigned long nr_pages;
struct vm_struct *area;
order = get_order(size);
virt = __get_free_pages(GFP_KERNEL, order);
if (virt == 0)
goto err0;
nr_pages = 1 << order;
scrub_pages(virt, nr_pages);
area = kmalloc(sizeof(*area), GFP_KERNEL);
if (area == NULL)
goto err1;
area->flags = VM_IOREMAP;
area->addr = (void *)virt;
area->size = size;
area->pages = NULL;
area->nr_pages = nr_pages;
area->phys_addr = 0; /* xenbus_map_ring_valloc uses this field! */
return area;
err1:
free_pages(virt, order);
err0:
return NULL;
}
EXPORT_SYMBOL_GPL(xen_alloc_vm_area);
void xen_free_vm_area(struct vm_struct *area)
{
unsigned int order = get_order(area->size);
unsigned long i;
unsigned long phys_addr = __pa(area->addr);
/* This area is used for foreign page mappping.
* So underlying machine page may not be assigned. */
for (i = 0; i < (1 << order); i++) {
unsigned long ret;
unsigned long gpfn = (phys_addr >> PAGE_SHIFT) + i;
struct xen_memory_reservation reservation = {
.nr_extents = 1,
.address_bits = 0,
.extent_order = 0,
.domid = DOMID_SELF
};
set_xen_guest_handle(reservation.extent_start, &gpfn);
ret = HYPERVISOR_memory_op(XENMEM_populate_physmap,
&reservation);
BUG_ON(ret != 1);
}
free_pages((unsigned long)area->addr, order);
kfree(area);
}
EXPORT_SYMBOL_GPL(xen_free_vm_area);
/****************************************************************************
* grant table hack
* cmd: GNTTABOP_xxx