mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-01 06:46:35 +01:00
Lasse Collin
93d09773d1
A later commit updates lib/decompress_unxz.c to enable this filter for kernel decompression. lib/decompress_unxz.c is already used if CONFIG_EFI_ZBOOT=y && CONFIG_KERNEL_XZ=y. This filter can be used by Squashfs without modifications to the Squashfs kernel code (only needs support in userspace Squashfs-tools). Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Lasse Collin <[email protected]> Reviewed-by: Sam James <[email protected]> Cc: Albert Ou <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Emil Renner Berthing <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Herbert Xu <[email protected]> Cc: Joel Stanley <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Jubin Zhong <[email protected]> Cc: Jules Maselbas <[email protected]> Cc: Krzysztof Kozlowski <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Rui Li <[email protected]> Cc: Simon Glass <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
78 lines
1.8 KiB
Plaintext
78 lines
1.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config XZ_DEC
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tristate "XZ decompression support"
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select CRC32
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help
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LZMA2 compression algorithm and BCJ filters are supported using
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the .xz file format as the container. For integrity checking,
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CRC32 is supported. See Documentation/staging/xz.rst for more
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information.
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if XZ_DEC
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config XZ_DEC_X86
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bool "x86 BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_POWERPC
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bool "PowerPC BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_ARM
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bool "ARM BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_ARMTHUMB
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bool "ARM-Thumb BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_ARM64
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bool "ARM64 BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_SPARC
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bool "SPARC BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_RISCV
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bool "RISC-V BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_MICROLZMA
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bool "MicroLZMA decoder"
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default n
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help
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MicroLZMA is a header format variant where the first byte
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of a raw LZMA stream (without the end of stream marker) has
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been replaced with a bitwise-negation of the lc/lp/pb
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properties byte. MicroLZMA was created to be used in EROFS
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but can be used by other things too where wasting minimal
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amount of space for headers is important.
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Unless you know that you need this, say N.
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endif
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config XZ_DEC_BCJ
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bool
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default n
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config XZ_DEC_TEST
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tristate "XZ decompressor tester"
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default n
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depends on XZ_DEC
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help
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This allows passing .xz files to the in-kernel XZ decoder via
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a character special file. It calculates CRC32 of the decompressed
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data and writes diagnostics to the system log.
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Unless you are developing the XZ decoder, you don't need this
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and should say N.
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