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SubjectRe: [PATCH] Use correct x86 reboot vector
Richard B. Johnson wrote:
> Don't thing there's anything much easier than:
> movl $1, %eax
> movl %eax, %cr0
> ... execute that in paged RAM (above the 1:1 mapping), and you
> will get a hard processor reset without any bus access at all.
> This unmaps everything in one fell-swoop.

You go back to 1:1 mappings at that point, so you *will* have bus accesses.


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