summaryrefslogtreecommitdiff
path: root/drivers/xen
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/swiotlb-xen.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index bb7888429be6..877baf2a94f4 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -214,10 +214,13 @@ retry:
/*
* Get IO TLB memory from any location.
*/
- if (early)
+ if (early) {
xen_io_tlb_start = memblock_alloc(PAGE_ALIGN(bytes),
PAGE_SIZE);
- else {
+ if (!xen_io_tlb_start)
+ panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+ __func__, PAGE_ALIGN(bytes), PAGE_SIZE);
+ } else {
#define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT))
#define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT)
while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) {