diff options
| -rw-r--r-- | arch/x86/boot/header.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S index 2ed8f0c25def..1bb08ecffd24 100644 --- a/arch/x86/boot/header.S +++ b/arch/x86/boot/header.S | |||
| @@ -520,8 +520,14 @@ pref_address: .quad LOAD_PHYSICAL_ADDR # preferred load addr | |||
| 520 | # the description in lib/decompressor_xxx.c for specific information. | 520 | # the description in lib/decompressor_xxx.c for specific information. |
| 521 | # | 521 | # |
| 522 | # extra_bytes = (uncompressed_size >> 12) + 65536 + 128 | 522 | # extra_bytes = (uncompressed_size >> 12) + 65536 + 128 |
| 523 | # | ||
| 524 | # LZ4 is even worse: data that cannot be further compressed grows by 0.4%, | ||
| 525 | # or one byte per 256 bytes. OTOH, we can safely get rid of the +128 as | ||
| 526 | # the size-dependent part now grows so fast. | ||
| 527 | # | ||
| 528 | # extra_bytes = (uncompressed_size >> 8) + 65536 | ||
| 523 | 529 | ||
| 524 | #define ZO_z_extra_bytes ((ZO_z_output_len >> 12) + 65536 + 128) | 530 | #define ZO_z_extra_bytes ((ZO_z_output_len >> 8) + 65536) |
| 525 | #if ZO_z_output_len > ZO_z_input_len | 531 | #if ZO_z_output_len > ZO_z_input_len |
| 526 | # define ZO_z_extract_offset (ZO_z_output_len + ZO_z_extra_bytes - \ | 532 | # define ZO_z_extract_offset (ZO_z_output_len + ZO_z_extra_bytes - \ |
| 527 | ZO_z_input_len) | 533 | ZO_z_input_len) |