[PATCH v2 17/23] xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree

Stefano Stabellini
2012-08-06T14:55:47Z

Only until we get the balloon driver to work.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
arch/arm/xen/enlighten.c | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 87b17f0..c244583 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -140,3 +140,21 @@ static int __init xen_init_events(void)
return 0;
}
postcore_initcall(xen_init_events);
+
+/* XXX: only until balloon is properly working */
+int alloc_xenballooned_pages(int nr_pages, struct page **pages, bool highmem)
+{
+ *pages = alloc_pages(highmem ? GFP_HIGHUSER : GFP_KERNEL,
+ get_order(nr_pages));
+ if (*pages == NULL)
+ return -ENOMEM;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(alloc_xenballooned_pages);
+
+void free_xenballooned_pages(int nr_pages, struct page **pages)
+{
+ kfree(*pages);
+ *pages = NULL;
+}
+EXPORT_SYMBOL_GPL(free_xenballooned_pages);
--
1.7.2.5