physmem: fix bug in detection of cross page boundary allocations

[vpp.git] / src / vlib / linux / physmem.c

diff --git a/src/vlib/linux/physmem.c b/src/vlib/linux/physmem.c
index b5f84ec..161dbf5 100644 (file)
--- a/src/vlib/linux/physmem.c
+++ b/src/vlib/linux/physmem.c
@@ -85,8 +85,8 @@ unix_physmem_alloc_aligned (vlib_main_t * vm, vlib_physmem_region_index_t idx,
       /* Make sure allocation does not span DMA physical chunk boundary. */
       hi_offset = lo_offset + n_bytes - 1;
 
-      if ((lo_offset >> pr->log2_page_size) ==
-         (hi_offset >> pr->log2_page_size))
+      if (((pointer_to_uword (pr->heap) + lo_offset) >> pr->log2_page_size) ==
+         ((pointer_to_uword (pr->heap) + hi_offset) >> pr->log2_page_size))
        break;
 
       /* Allocation would span chunk boundary, queue it to be freed as soon as