From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
Masahiro Yamada <masahiroy@kernel.org>
Subject: [PATCH 2/5] kbuild: drop $(size_append) from cmd_zstd
Date: Mon, 10 Jan 2022 03:15:26 +0900 [thread overview]
Message-ID: <20220109181529.351420-2-masahiroy@kernel.org> (raw)
In-Reply-To: <20220109181529.351420-1-masahiroy@kernel.org>
The appended file size is only used by the decompressors, which some
architectures support.
As the comment "zstd22 is used for kernel compression" says, cmd_zstd22
is used in arch/{mips,s390,x86}/boot/compressed/Makefile.
On the other hand, there is no good reason to append the file size to
cmd_zstd since it is used for other purposes.
Actually cmd_zstd is only used in usr/Makefile, where the appended file
size is rather harmful.
The initramfs with its file size appended is considered as corrupted
data, so commit 65e00e04e5ae ("initramfs: refactor the initramfs build
rules") added 'override size_append := :' to make it no-op.
As a conclusion, this $(size_append) should not exist here.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
scripts/Makefile.lib | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index d1f865b8c0cb..5366466ea0e4 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -473,7 +473,7 @@ quiet_cmd_xzmisc = XZMISC $@
# be used because it would require zstd to allocate a 128 MB buffer.
quiet_cmd_zstd = ZSTD $@
- cmd_zstd = { cat $(real-prereqs) | $(ZSTD) -19; $(size_append); } > $@
+ cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@
quiet_cmd_zstd22 = ZSTD22 $@
cmd_zstd22 = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@
--
2.32.0
next prev parent reply other threads:[~2022-01-09 18:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-09 18:15 [PATCH 1/5] sh: rename suffix-y to suffix_y Masahiro Yamada
2022-01-09 18:15 ` Masahiro Yamada [this message]
2022-01-10 11:32 ` [PATCH 2/5] kbuild: drop $(size_append) from cmd_zstd Nicolas Schier
2022-01-09 18:15 ` [PATCH 3/5] kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22} Masahiro Yamada
2022-01-10 11:33 ` Nicolas Schier
2023-06-23 14:45 ` Eugeniu Rosca
2023-07-19 19:09 ` Eugeniu Rosca
2023-07-22 16:08 ` Masahiro Yamada
2023-07-25 9:24 ` Eugeniu Rosca
2023-08-02 9:21 ` Masahiro Yamada
2023-08-11 11:25 ` Eugeniu Rosca
2022-01-09 18:15 ` [PATCH 4/5] arch: decompressor: remove useless vmlinux.bin.all-y Masahiro Yamada
2022-01-10 11:33 ` Nicolas Schier
2022-01-09 18:15 ` [PATCH 5/5] kbuild: add cmd_file_size Masahiro Yamada
2022-01-10 11:33 ` Nicolas Schier
2022-01-10 11:31 ` [PATCH 1/5] sh: rename suffix-y to suffix_y Nicolas Schier
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