[PATCH 6/6] init/Kconfig: Select decompressing method if compressing kernel
From: Pingfan Liu <hidden>
Date: 2023-03-06 03:04:09
Also in:
kexec, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
If choosing an EFI_ZBOOT image, the corresponding decompressing method should be selected so that kexec can load that zboot image. This can be achieved when "Kernel compression mode" is determined. Signed-off-by: Pingfan Liu <redacted> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: kexec@lists.infradead.org To: linux-kernel@vger.kernel.org --- init/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index 44e90b28a30f..046724208645 100644
--- a/init/Kconfig
+++ b/init/Kconfig@@ -269,6 +269,7 @@ choice config KERNEL_GZIP bool "Gzip" depends on HAVE_KERNEL_GZIP + select KEXEC_DECOMPRESS_GZIP if KEXEC_FILE && EFI_ZBOOT help The old and tried gzip compression. It provides a good balance between compression ratio and decompression speed.
@@ -276,6 +277,7 @@ config KERNEL_GZIP config KERNEL_BZIP2 bool "Bzip2" depends on HAVE_KERNEL_BZIP2 + select KEXEC_DECOMPRESS_BZIP2 if KEXEC_FILE && EFI_ZBOOT help Its compression ratio and speed is intermediate. Decompression speed is slowest among the choices. The kernel
@@ -286,6 +288,7 @@ config KERNEL_BZIP2 config KERNEL_LZMA bool "LZMA" depends on HAVE_KERNEL_LZMA + select KEXEC_DECOMPRESS_LZMA if KEXEC_FILE && EFI_ZBOOT help This compression algorithm's ratio is best. Decompression speed is between gzip and bzip2. Compression is slowest.
@@ -294,6 +297,7 @@ config KERNEL_LZMA config KERNEL_XZ bool "XZ" depends on HAVE_KERNEL_XZ + select KEXEC_DECOMPRESS_XZ if KEXEC_FILE && EFI_ZBOOT help XZ uses the LZMA2 algorithm and instruction set specific BCJ filters which can improve compression ratio of executable
@@ -309,6 +313,7 @@ config KERNEL_XZ config KERNEL_LZO bool "LZO" depends on HAVE_KERNEL_LZO + select KEXEC_DECOMPRESS_LZO if KEXEC_FILE && EFI_ZBOOT help Its compression ratio is the poorest among the choices. The kernel size is about 10% bigger than gzip; however its speed
@@ -317,6 +322,7 @@ config KERNEL_LZO config KERNEL_LZ4 bool "LZ4" depends on HAVE_KERNEL_LZ4 + select KEXEC_DECOMPRESS_LZ4 if KEXEC_FILE && EFI_ZBOOT help LZ4 is an LZ77-type compressor with a fixed, byte-oriented encoding. A preliminary version of LZ4 de/compression tool is available at
@@ -329,6 +335,7 @@ config KERNEL_LZ4 config KERNEL_ZSTD bool "ZSTD" depends on HAVE_KERNEL_ZSTD + select KEXEC_DECOMPRESS_ZSTD if KEXEC_FILE && EFI_ZBOOT help ZSTD is a compression algorithm targeting intermediate compression with fast decompression speed. It will compress better than GZIP and
--
2.31.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel