diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/efi_loader/efi_memory.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c index 80e4e26e05..ebe8e94c83 100644 --- a/lib/efi_loader/efi_memory.c +++ b/lib/efi_loader/efi_memory.c @@ -62,9 +62,17 @@ static void efi_mem_sort(void) * Unmaps all memory occupied by the carve_desc region from the * list entry pointed to by map. * - * Returns 1 if carving was performed or 0 if the regions don't overlap. - * Returns -1 if it would affect non-RAM regions but overlap_only_ram is set. - * Carving is only guaranteed to complete when all regions return 0. + * Returns EFI_CARVE_NO_OVERLAP if the regions don't overlap. + * Returns EFI_CARVE_OVERLAPS_NONRAM if the carve and map overlap, + * and the map contains anything but free ram. + * (only when overlap_only_ram is true) + * Returns EFI_CARVE_LOOP_AGAIN if the mapping list should be traversed + * again, as it has been altered + * Returns the number of overlapping pages. The pages are removed from + * the mapping list. + * + * In case of EFI_CARVE_OVERLAPS_NONRAM it is the callers responsibility + * to readd the already carved out pages to the mapping. */ static int efi_mem_carve_out(struct efi_mem_list *map, struct efi_mem_desc *carve_desc, |