> I found patch from about three years ago that implemented a 32-bit
> version of the x86_64 machine check handler. Do you know of any newer
> attempts?
No.
> However, given the merge of x86, a single implementation should be able
> to handle both the 32-bit and 64-bit cases. I tried to build the 64-bit
> machine check handler (mce_64.c) for 32-bit to see what kind problems it
> would run into. So far I found a few things:
> - there is no idle_notifier_register in 32-bit x86
There used to be one, just needs to be readded.
> - there is no oops_begin in 32-bit x86
> - register names are different (rip, cs)
regs->rip -> instruction_pointer()
->cs just needs a similar macro
> So it looks like giving 32-bit x86 the same machine check support as in
> 64-bit is both feasible and desirable.
Yep.
-Andi
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