Eric Lee / smarc-fsl-linux-kernel

11 Sep, 2015

1 commit

  • 2d3862d26   lib/decompressors: use real out buf size for gunzip with kernel ... Browse Code »

    When loading x86 64bit kernel above 4GiB with patched grub2, got kernel
    gunzip error.

    | early console in decompress_kernel
    | decompress_kernel:
    | input: [0x807f2143b4-0x807ff61aee]
    | output: [0x807cc00000-0x807f3ea29b] 0x027ea29c: output_len
    | boot via startup_64
    | KASLR using RDTSC...
    | new output: [0x46fe000000-0x470138cfff] 0x0338d000: output_run_size
    | decompress: [0x46fe000000-0x47007ea29b]
    Cc: Alexandre Courbot
    Cc: Jon Medhurst
    Cc: Stephen Warren
    Cc: "H. Peter Anvin"
    Cc: Thomas Gleixner
    Cc: Ingo Molnar
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Yinghai Lu
     

09 Aug, 2014

2 commits

  • d97b07c54   initramfs: support initramfs that is bigger than 2GiB ... Browse Code »

    Now with 64bit bzImage and kexec tools, we support ramdisk that size is
    bigger than 2g, as we could put it above 4G.

    Found compressed initramfs image could not be decompressed properly. It
    turns out that image length is int during decompress detection, and it
    will become < 0 when length is more than 2G. Furthermore, during
    decompressing len as int is used for inbuf count, that has problem too.

    Change len to long, that should be ok as on 32 bit platform long is
    32bits.

    Tested with following compressed initramfs image as root with kexec.
    gzip, bzip2, xz, lzma, lzop, lz4.
    run time for populate_rootfs():
    size name Nehalem-EX Westmere-EX Ivybridge-EX
    9034400256 root_img : 26s 24s 30s
    3561095057 root_img.lz4 : 28s 27s 27s
    3459554629 root_img.lzo : 29s 29s 28s
    3219399480 root_img.gz : 64s 62s 49s
    2251594592 root_img.xz : 262s 260s 183s
    2226366598 root_img.lzma: 386s 376s 277s
    2901482513 root_img.bz2 : 635s 599s

    Signed-off-by: Yinghai Lu
    Cc: "H. Peter Anvin"
    Cc: Ingo Molnar
    Cc: Rashika Kheria
    Cc: Josh Triplett
    Cc: Kyungsik Lee
    Cc: P J P
    Cc: Al Viro
    Cc: Tetsuo Handa
    Cc: "Daniel M. Weeks"
    Cc: Alexandre Courbot
    Cc: Jan Beulich
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Yinghai Lu
     
  • 4d4b866ae   initrd: fix lz4 decompress with initrd ... Browse Code »

    During testing initrd (>2G) support, find decompress/lz4 does not work
    with initrd at all.

    decompress_* should support:
    1. inbuf[]/outbuf[] for kernel preboot.
    2. inbuf[]/flush() for initramfs
    3. fill()/flush() for initrd.

    in the unlz4 does not handle case 3, as input len is passed as 0, and it
    failed in first try.

    Fix that add one extra if (fill) checking, and get out if EOF from the
    fill().

    Signed-off-by: Yinghai Lu
    Cc: Kyungsik Lee
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Yinghai Lu
     

24 Jan, 2014

1 commit

  • 2a1d689c9   lib/decompress_unlz4.c: always set an error return code on failures ... Browse Code »

    "ret", being set to -1 early on, gets cleared by the first invocation of
    lz4_decompress()/lz4_decompress_unknownoutputsize(), and hence subsequent
    failures wouldn't be noticed by the caller without setting it back to -1
    right after those calls.

    Reported-by: Matthew Daley
    Signed-off-by: Jan Beulich
    Cc: Kyungsik Lee
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jan Beulich
     

10 Jul, 2013

1 commit

  • e76e1fdfa   lib: add support for LZ4-compressed kernel ... Browse Code »

    Add support for extracting LZ4-compressed kernel images, as well as
    LZ4-compressed ramdisk images in the kernel boot process.

    Signed-off-by: Kyungsik Lee
    Cc: "H. Peter Anvin"
    Cc: Ingo Molnar
    Cc: Thomas Gleixner
    Cc: Russell King
    Cc: Borislav Petkov
    Cc: Florian Fainelli
    Cc: Yann Collet
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kyungsik Lee