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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