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-rw-r--r--arch/x86/xen/p2m.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 055e37e43541..95ce9b5be411 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -181,8 +181,15 @@ static void p2m_init_identity(unsigned long *p2m, unsigned long pfn)
static void * __ref alloc_p2m_page(void)
{
- if (unlikely(!slab_is_available()))
- return memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ if (unlikely(!slab_is_available())) {
+ void *ptr = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+
+ if (!ptr)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+ __func__, PAGE_SIZE, PAGE_SIZE);
+
+ return ptr;
+ }
return (void *)__get_free_page(GFP_KERNEL);
}