PROBLEM: Unresolved symbols of _mmx_memcpy in modules on an Athlon XP system

From: Alasdair McWilliam (allymcw2000_at_hotmail.com)
Date: 08/14/03

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    To: linux-kernel@vger.kernel.org
Date:	Thu, 14 Aug 2003 02:02:02 +0100

    1. PROBLEM: Unresolved symbols of _mmx_memcpy in modules on an Athlon XP
    system

    2. I've recently built a new server, and transplanted my linux installation
    disks from an old server. The new server is an AMD Athlon XP 1800, the old
    server was an AMD K6-II 500MHz.

    The transplant went fine, however I haven't been able to successfully move
    to an Athlon-optimised kernel. The kernel compile is fine, but when running
    depmod -de after installing the modules, I'm faced with about 20 "unresolved
    symbols". Each module is missing _mmx_memcpy.

    I cannot get around it - I've tried everything, from the patch to
    arch/i386/kernel/i386_ksyms.c to completely reconfiguring my kernel from a
    brand new source tree. Nothing works.

    3. Keywords: Kernel, Athlon, _mmx_memcpy, modules

    4. Linux kernel version 2.4.20

    7.1. Linux persephone 2.4.20 #1 Sun Dec 8 12:07:58 GMT 2002 i686 unknown

    Gnu C 2.95.4
    Gnu make 3.79.1
    util-linux 2.11n
    mount 2.11n
    modutils 2.4.15
    e2fsprogs 1.27
    PPP 2.4.1
    isdn4k-utils 3.1pre4
    Linux C Library 2.2.5
    Dynamic linker (ldd) 2.2.5
    Procps 2.0.7
    Net-tools 1.60
    Console-tools 0.2.3
    Sh-utils 2.0.11
    Modules Loaded rtc 8139too mii iptable_filter ipt_ttl ipt_mark
    ipt_limit ipt_length ipt_REJECT ipt_REDIRECT ipt_MASQUERADE ipt_MARK ipt_LOG
    ip_conntrack_irc ip_nat_irc iptable_nat ip_tables ip_conntrack ipip
    ppp_deflate zlib_inflate zlib_deflate ppp_async dummy bsd_comp ppp_generic
    slhc unix

    7.2. processor : 0
    vendor_id : AuthenticAMD
    cpu family : 6
    model : 6
    model name : AMD Athlon(tm) XP 1800+
    stepping : 2
    cpu MHz : 1533.701
    cache size : 256 KB
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 1
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
    cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
    bogomips : 3060.53

    7.3. rtc 5756 0 (autoclean)
    8139too 13568 1 (autoclean)
    mii 2160 0 (autoclean) [8139too]
    iptable_filter 1728 1
    ipt_ttl 640 0 (unused)
    ipt_mark 480 0 (unused)
    ipt_limit 960 0 (unused)
    ipt_length 480 0 (unused)
    ipt_REJECT 2848 26
    ipt_REDIRECT 800 0 (unused)
    ipt_MASQUERADE 1248 1
    ipt_MARK 800 0 (unused)
    ipt_LOG 3232 0 (unused)
    ip_conntrack_irc 3008 1 (autoclean)
    ip_nat_irc 2272 0 (unused)
    iptable_nat 13748 2 [ipt_REDIRECT ipt_MASQUERADE ip_nat_irc]
    ip_tables 10336 13 [iptable_filter ipt_ttl ipt_mark ipt_limit
    ipt_length ipt_REJECT ipt_REDIRECT ipt_MASQUERADE ipt_MARK ipt_LOG
    iptable_nat]
    ip_conntrack 16076 2 [ipt_REDIRECT ipt_MASQUERADE
    ip_conntrack_irc ip_nat_irc iptable_nat]
    ipip 5856 0 (unused)
    ppp_deflate 2944 0
    zlib_inflate 18304 0 [ppp_deflate]
    zlib_deflate 17504 0 [ppp_deflate]
    ppp_async 6304 1
    dummy 1056 0 (unused)
    bsd_comp 3968 0
    ppp_generic 16076 3 [ppp_deflate ppp_async bsd_comp]
    slhc 4384 0 [ppp_generic]
    unix 13508 14 (autoclean)

    8. I've done research and found that people have been experiencing this
    problem from linux-2.4.0-test releases. Can someone please fix it?! Or point
    me to a patch that works? :( The server's running on a chunky kernel
    optimised for the old K6-II (i586).

    Kind regards,
    Alasdair McWilliam

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