The code assumes sorted mappings in descending address order. When
splitting a mapping, insert the new part next to the current mapping.
Signed-off-by: Stefan Brüns <stefan.bru...@rwth-aachen.de>
Reviewed-by: Alexander Graf <ag...@suse.de>
---
lib/efi_loader/efi_memory.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
index 7051948..2bbf8eb 100644
--- a/lib/efi_loader/efi_memory.c
+++ b/lib/efi_loader/efi_memory.c
@@ -134,7 +134,8 @@ static int efi_mem_carve_out(struct efi_mem_list *map,
newmap->desc = map->desc;
newmap->desc.physical_start = carve_start;
newmap->desc.num_pages = (map_end - carve_start) >> EFI_PAGE_SHIFT;
- list_add_tail(&newmap->link, &efi_mem);
+ /* Insert before current entry (descending address order) */
+ list_add_tail(&newmap->link, &map->link);
/* Shrink the map to [ map_start ... carve_start ] */
map_desc->num_pages = (carve_start - map_start) >> EFI_PAGE_SHIFT;
--
2.10.0
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