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    SubjectRe: Bug on 2.6.26 - x86 VIA Nehemiah CentaurHauls processor cannot boot
    Ingo Molnar wrote:
    >> Not a bug.
    > it would still be nice to get a nice printk and panic during bootup
    > instead of some obscure crash, hm?

    Yes. The fundamental problem is that Centaur has a set of CPUs which
    report family == 6 but don't have the long NOP instructions. We would
    need an exact CPUID criterion for these CPUs in order to be able to
    report it as an error. An alternative would be to attempt trapping in
    the real-mode code (#UD is one of the *very* few CPU exceptions which
    can be reliably captured in real mode on a BIOS system), but doing so
    would probably mean breaking Loadlin at the very least.

    We can't "printk and panic" because we never get that far in the kernel
    proper, for obvious reasons: the code is quite littered with these buggers.


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