Hi Piotr,

[auto build test ERROR on next-20160310]
[cannot apply to tip/x86/core v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Piotr-Henryk-Dabrowski/cpu-command-line-parmeter-SYS_cpuid-sys-call-kernel-adjusted-CPUID/20160311-043022
config: um-x86_64_defconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=um SUBARCH=x86_64

All errors (new ones prefixed by >>):

>> arch/x86/um/built-in.o:(.rodata+0xac0): undefined reference to `sys_cpuid'
   collect2: error: ld returned 1 exit status

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