When such pages get assigned to domains (and hence their ->tot_pages
not incremented accordingly) we would otherwise also need to suppress
decrementing the count when freeing those pages.
Signed-off-by: Jan Beulich <jbeul...@suse.com>
---
v2: Add ASSERT_UNREACHABLE().
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -2303,6 +2303,11 @@ struct page_info *alloc_domheap_pages(
if ( memflags & MEMF_no_owner )
memflags |= MEMF_no_refcount;
+ else if ( (memflags & MEMF_no_refcount) && d )
+ {
+ ASSERT_UNREACHABLE();
+ return NULL;
+ }
if ( dma_bitsize && ((dma_zone = bits_to_zone(dma_bitsize)) < zone_hi) )
pg = alloc_heap_pages(dma_zone + 1, zone_hi, order, memflags, d);
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