lkml.org 
[lkml]   [2011]   [Nov]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectSparc-32 doesn't work in 3.1.
    Still trying to ship an Aboriginal Linux release with the 3.1 kernel,
    but the sparc target broke, as in QEMU's OpenBios goes:

    Boot time fixup v1.6. 4/Mar/98 Jakub Jelinek (jj@ultra.linux.cz).
    Patching kernel for srmmu[Fujitsu TurboSparc]/iommu
    Fixup i f029ddfc doesn't refer to a valid instruction at
    f00de648[95eea000]
    halt, power off

    And doesn't even boot Linux. A sparc-objdump -a on vmlinux says that
    chunk has:

    f00de63c: 84 0b 60 ff and %o5, 0xff, %g2
    f00de640: 91 32 20 10 srl %o0, 0x10, %o0
    f00de644: 85 28 a0 08 sll %g2, 8, %g2
    f00de648: 98 0a 20 ff and %o0, 0xff, %o4
    f00de64c: 03 00 00 3f sethi %hi(0xfc00), %g1
    f00de650: 82 10 63 00 or %g1, 0x300, %g1 ! ff00
    <cputypvallen+0xfef4>
    f00de654: 90 0a 00 01 and %o0, %g1, %o0

    Which means nothing to me.

    I bisected it to this:

    commit 9933fc0ac1ac14b795819cd63d05ea92112f690a
    Author: Theodore Ts'o <tytso@mit.edu>
    Date: Mon Aug 1 08:45:02 2011 -0400

    ext4: introduce ext4_kvmalloc(), ext4_kzalloc(), and ext4_kvfree()

    Introduce new helper functions which try kmalloc, and then fall back
    to vmalloc if necessary, and use them for allocating and deallocating
    s_flex_groups.

    Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

    The commit before that builds fine, this one doesn't.

    I think it's triggering bad behavior in arch/sparc/mm/btfixup.c (at
    least that's where the "valid instruction" error message comes from),
    but I have no idea what this file is doing, and it was last touched in
    2008. (I'm building with gcc 4.2.1 and binutils 2.17, both of which
    were last touched around 2006, so that's not new either...)

    Rob


    \
     
     \ /
      Last update: 2011-11-12 18:25    [W:4.463 / U:0.060 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site