From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Date: Wed, 4 Jul 2012 10:21:34 +0000 (+0000)
Subject: xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=f1cb915028d67070f24fc9fef217fc1cf2b378f5;p=people%2Fsstabellini%2Flinux-pvhvm-deprecated.git

xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree

Only until we get the balloon driver to work.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---

diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index a6dc9eb9c8d..924c9aa42ee 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -199,3 +199,21 @@ int __init xen_guest_init(void)
 	return 0;
 }
 EXPORT_SYMBOL(xen_guest_init);
+
+/* 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(alloc_xenballooned_pages);
+
+void free_xenballooned_pages(int nr_pages, struct page **pages)
+{
+	kfree(*pages);
+	*pages = NULL;
+}
+EXPORT_SYMBOL(free_xenballooned_pages);