Eric Lee / smarc-fsl-linux-kernel

13 Aug, 2020

1 commit

  • d89775fc9   lib/: replace HTTP links with HTTPS ones ... Browse Code »

    Rationale:
    Reduces attack surface on kernel devs opening the links for MITM
    as HTTPS traffic is much harder to manipulate.

    Signed-off-by: Alexander A. Klimov
    Signed-off-by: Andrew Morton
    Acked-by: Coly Li [crc64.c]
    Link: http://lkml.kernel.org/r/20200726112154.16510-1-grandmaster@al2klimov.de
    Signed-off-by: Linus Torvalds

    Alexander A. Klimov
     

02 Oct, 2018

1 commit

  • 242cdad87   lib/xz: Put CRC32_POLY_LE in xz_private.h ... Browse Code »

    This fixes a regression introduced by faa16bc404d72a5 ("lib: Use
    existing define with polynomial").

    The cleanup added a dependency on include/linux, which broke the PowerPC
    boot wrapper/decompresser when KERNEL_XZ is enabled:

    BOOTCC arch/powerpc/boot/decompress.o
    In file included from arch/powerpc/boot/../../../lib/decompress_unxz.c:233,
    from arch/powerpc/boot/decompress.c:42:
    arch/powerpc/boot/../../../lib/xz/xz_crc32.c:18:10: fatal error:
    linux/crc32poly.h: No such file or directory
    #include
    ^~~~~~~~~~~~~~~~~~~

    The powerpc decompresser is a hairy corner of the kernel. Even while building
    a 64-bit kernel it needs to build a 32-bit binary and therefore avoid including
    files from include/linux.

    This allows users of the xz library to avoid including headers from
    'include/linux/' while still achieving the cleanup of the magic number.

    Fixes: faa16bc404d72a5 ("lib: Use existing define with polynomial")
    Reported-by: Meelis Roos
    Reported-by: kbuild test robot
    Suggested-by: Christophe LEROY
    Signed-off-by: Joel Stanley
    Tested-by: Meelis Roos
    Signed-off-by: Michael Ellerman

    Joel Stanley
     

27 Jul, 2018

1 commit

14 Jan, 2011

1 commit

  • 24fa0402a   decompressors: add XZ decompressor module ... Browse Code »

    In userspace, the .lzma format has become mostly a legacy file format that
    got superseded by the .xz format. Similarly, LZMA Utils was superseded by
    XZ Utils.

    These patches add support for XZ decompression into the kernel. Most of
    the code is as is from XZ Embedded .
    It was written for the Linux kernel but is usable in other projects too.

    Advantages of XZ over the current LZMA code in the kernel:
    - Nice API that can be used by other kernel modules; it's
    not limited to kernel, initramfs, and initrd decompression.
    - Integrity check support (CRC32)
    - BCJ filters improve compression of executable code on
    certain architectures. These together with LZMA2 can
    produce a few percent smaller kernel or Squashfs images
    than plain LZMA without making the decompression slower.

    This patch: Add the main decompression code (xz_dec), testing module
    (xz_dec_test), wrapper script (xz_wrap.sh) for the xz command line tool,
    and documentation. The xz_dec module is enough to have a usable XZ
    decompressor e.g. for Squashfs.

    Signed-off-by: Lasse Collin
    Cc: "H. Peter Anvin"
    Cc: Alain Knaff
    Cc: Albin Tonnerre
    Cc: Phillip Lougher
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Lasse Collin