diff options
Diffstat (limited to 'lib/efi_loader/efi_memory.c')
| -rw-r--r-- | lib/efi_loader/efi_memory.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c index 4c0216b1d2..b5775e0399 100644 --- a/lib/efi_loader/efi_memory.c +++ b/lib/efi_loader/efi_memory.c @@ -37,17 +37,21 @@ void *efi_bounce_buffer; #endif /** - * efi_pool_allocation - memory block allocated from pool + * struct efi_pool_allocation - memory block allocated from pool * * @num_pages: number of pages allocated * @checksum: checksum + * @data: allocated pool memory * - * U-Boot services each EFI AllocatePool request as a separate - * (multiple) page allocation. We have to track the number of pages + * U-Boot services each UEFI AllocatePool() request as a separate + * (multiple) page allocation. We have to track the number of pages * to be able to free the correct amount later. + * + * The checksum calculated in function checksum() is used in FreePool() to avoid + * freeing memory not allocated by AllocatePool() and duplicate freeing. + * * EFI requires 8 byte alignment for pool allocations, so we can - * prepend each allocation with an 64 bit header tracking the - * allocation size, and hand out the remainder to the caller. + * prepend each allocation with these header fields. */ struct efi_pool_allocation { u64 num_pages; |