Re: [PATCH 04/13] x86, mm: Revert back good_end setting for 64bit

[H. Peter Anvin]

On 10/03/2012 09:51 AM, Jacob Shin wrote:
> Any comments, thoughts? hpa? Yinghai?
>
> So it seems that during init_memory_mapping Xen needs to modify page table
> bits and the memory where the page tables live needs to be direct mapped at
> that time.
>
> Since we now call init_memory_mapping for every E820_RAM range sequencially,
> the only way to satisfy Xen is to find_early_page_table_space (good_end needs
> to be within memory already mapped at the time) for every init_memory_mapping
> call.
>
> What do you think Yinghai?

I outlined the sane way to do this at Kernel Summit for Yinghai and 
several other people.  I need to write it up for people who weren't 
there, but I don't have time right at the moment.

	-hpa

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

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