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    SubjectRe: Kconfig: ARCH=x86 causes wrong utsname.machine
    On Fri, Nov 16, 2007 at 07:20:15AM -0800, H. Peter Anvin wrote:
    > Andreas Herrmann wrote:
    > >The new ARCH=x86 kernel build causes weired machine strings on 32-bit.
    > >For a cross-compiled kernel I have
    > >
    > > $ uname -m
    > > x66_64
    > >
    > >For a kernel natively built on a 32 bit machine I have
    > >
    > > $ uname -m
    > > x66
    > >
    > >Looking at the sources, I think that utsname->machine was initially
    > >set as "x86_64" and "x86", respectively.
    > >But in arch/x86/kernel/cpu/bugs.c in check_bugs() the second character
    > >is set to '6' on my K7.
    > >
    > >I think the right solution for that problem is to use "x86_64" as the
    > >machine name for 64-bit and to keep the old "i[3456]86" strings for
    > >32-bit kernels.
    > Absolutely. This would be userspace-visible ABI breakage.

    Any good suggestions here???
    UTS_MACHINE is set in top-level Makefile and if we specify
    make ARCH=x86
    we do not know if i386 or x86_&4 is correct until the configuration
    has been read.

    Should we report a "make ARCH=x86" as uname -m == x86??

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      Last update: 2007-11-16 23:17    [W:0.029 / U:159.420 seconds]
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