Re: [GIT PULL] x86 setup: correct booting on 486 (revised)

[H. Peter Anvin]

Linus Torvalds wrote:
> Final comment: shouldn't we set up %esp to be correct for the new %ss too?

Well, the 32-bit code needs to set up its own stack, and only it knows 
where it wants its stack; we don't guarantee that the stack is valid 
when we enter the 32-bit code and we're entering with both INT and NMI 
disabled (requiring a stack would probably break all existing users of 
the 32-bit entrypoint.)

However, that being said, doing so is trivial, and it might help some 
debugging hack; anything that makes debugging easier is a Good Thing[TM].

	-hpa
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