[PATCH 3/8] add mem64_min/max control

H. Peter Anvin hpa at zytor.com
Sun Nov 18 00:14:40 EST 2012

On 11/17/2012 09:00 PM, Eric W. Biederman wrote:
>> The easy way to fix that is to do what we do on 32 bits: we copy it
>> into the bss before we turn paging on (the 64-bit equivalent is before
>> we switch to the new page tables.)  That way we know where it is, at
>> least for the bounded-size data items.
> Whatever works.  It sounds like six of one half a dozen of the other to
> me.  Last I looked early_ioremap works as soon as paging is enabled on
> x86_64.

Well, x86-64 means paging is enabled.  Presumably you mean "as son as we 
are onl our own page tables".  I'm fine either way, *as long as* we 
don't touch *any* memory outside text/data/bss/brk before we recover 
this content.


H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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