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    SubjectRe: This kernel requires the following features not present on the CPU... (on a VIA C7 CPU)
    Simon Arlott wrote:
    >
    > Is it automatic? I have CONFIG_X86_CMPXCHG=y without cx8 showing in
    > cpuinfo, and it appears to work fine.
    >
    > Will your changes needlessly prevent the kernel running? Would I be
    > right in thinking that the kernel is successfully using cmpxchg even
    > though it's considered disabled? I realise people compile kernels for
    > the wrong CPU but preventing them working when it's been chosen
    > correctly seems wrong.
    >

    CX8 isn't cmpxchg; it's cmpxchg8b.

    -hpa
    -
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