Re: [PATCH] x86: Construct 32 bit boot time page tables in native format.

H. Peter Anvin
2008-01-25T00:06:47Z

Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> Yes. We'd use it during initialization and at other times when we
>> need trampolining, but give the swapper something which only has the
>> kernel map.
>
> Hm, though Xen makes it all a bit more complex, as usual. In the PAE
> case it wouldn't allow the pmd to be shared, so you'd have to allocate a
> new pmd and copy into it. There's probably a way to deal with it within
> the existing paravirt hooks...
>

Yeah, I'm aware of this particular piece of Xen braindamage, and
although I had some very unkind words to say about it, it mirrors what
we have to do for the !PAE case anyway, so it can be sort of glossed over.

-hpa