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    SubjectRe: CONFIG_MK6 = lsof hangs unkillable
    Adrian Bunk <bunk@stusta.de> wrote:
    >
    > On Fri, Jan 20, 2006 at 04:44:07AM -0800, Andrew Morton wrote:
    > > Tony Mantler <nicoya@ubb.ca> wrote:
    > > >
    > > > I'm having trouble running lsof on 2.6.15.1 when the kernel is
    > > > compiled with CONFIG_MK6. When run as root, lsof will segfault, and
    > > > when run as a user lsof will hang unkillable.
    > > >
    > > > The same kernel, same machine, but compiled with CONFIG_MK7 runs just
    > > > lsof just fine.
    > >
    > > That's creepy. CONFIG_MK6 hardly does anything. The main thing it does is
    > > feed `-march=k6' into the compiler. MK7 uses `-march=athlon'.
    > >...
    >
    > CONFIG_MK7 results in a bigger L1_CACHE_SHIFT than CONFIG_MK6.
    >
    > AFAIR it wouldn't be the first time that changing L1_CACHE_SHIFT would
    > hide a real bug visible with a different L1_CACHE_SHIFT.
    >

    hm, OK. Well that's something we can ask Tony to eliminate, by patching
    his Kconfig.cpu to make CONFIG_MK6 have the larger L1_CACHE_SHIFT (and/or
    vice versa).

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