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    SubjectRe: [PATCH v2 12/22] arm64: Delay cpu feature checks
    Hi Suzuki,

    [auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]

    config: arm64-alldefconfig (attached as .config)
    reproduce:
    wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
    chmod +x ~/bin/make.cross
    # save the attached .config to linux build tree
    make.cross ARCH=arm64

    Note: the linux-review/Suzuki-K-Poulose/arm64-Consolidate-CPU-feature-handling HEAD bfdef3a10032e84cc7ae186a058443219f110679 builds fine.
    It only hurts bisectibility.

    All errors (new ones prefixed by >>):

    arch/arm64/kernel/cpufeature.c: In function 'cpu_enable_features':
    >> arch/arm64/kernel/cpufeature.c:733:52: error: 'const struct arm64_cpu_capabilities' has no member named 'sys_reg'
    if(!cpus_have_cap(caps[i].capability) || !caps[i].sys_reg)
    ^
    arch/arm64/kernel/cpufeature.c:739:47: error: 'const struct arm64_cpu_capabilities' has no member named 'sys_reg'
    if (!feature_matches(read_cpu_sysreg(caps[i].sys_reg), &caps[i]))
    ^

    vim +733 arch/arm64/kernel/cpufeature.c

    727 const struct arm64_cpu_capabilities *caps = arm64_features;
    728
    729 for(i = 0; caps[i].desc; i++)
    730 if (caps[i].enable && cpus_have_cap(caps[i].capability))
    731 caps[i].enable(NULL);
    732 for(i = 0; caps[i].desc; i++) {
    > 733 if(!cpus_have_cap(caps[i].capability) || !caps[i].sys_reg)
    734 continue;
    735 /*
    736 * If the new CPU misses an advertised feature, we cannot proceed

    ---
    0-DAY kernel test infrastructure Open Source Technology Center
    https://lists.01.org/pipermail/kbuild-all Intel Corporation
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