summaryrefslogtreecommitdiff
path: root/arch/arm/xen
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/xen')
-rw-r--r--arch/arm/xen/p2m.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/xen/p2m.c b/arch/arm/xen/p2m.c
index b31ee1b275b0..97baf4427817 100644
--- a/arch/arm/xen/p2m.c
+++ b/arch/arm/xen/p2m.c
@@ -146,6 +146,38 @@ unsigned long __mfn_to_pfn(unsigned long mfn)
}
EXPORT_SYMBOL_GPL(__mfn_to_pfn);
+int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
+ struct gnttab_map_grant_ref *kmap_ops,
+ struct page **pages, unsigned int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ if (map_ops[i].status)
+ continue;
+ set_phys_to_machine(map_ops[i].host_addr >> PAGE_SHIFT,
+ map_ops[i].dev_bus_addr >> PAGE_SHIFT);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(set_foreign_p2m_mapping);
+
+int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
+ struct gnttab_map_grant_ref *kmap_ops,
+ struct page **pages, unsigned int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ set_phys_to_machine(unmap_ops[i].host_addr >> PAGE_SHIFT,
+ INVALID_P2M_ENTRY);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(clear_foreign_p2m_mapping);
+
bool __set_phys_to_machine_multi(unsigned long pfn,
unsigned long mfn, unsigned long nr_pages)
{