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.bruens@rwth-aachen.de Reviewed-by: Alexander Graf agraf@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;