Aleksey V. Kunitskiy wrote:
On Friday 10 August 2007 22:34, Volker Armin Hemmann wrote:
So your 'lost' memory is not really lost....
Why? If I have 3G of memory it is OK and 4G is a problem. Of course a few
MB(~100 actualy) of memory is not critical for me in this case, but I'd like
to understand why 4G is problem where logical address space is 64 bit and
physical is about ~40 bit.
Let em start with a disclaimer: I don't have an amd64 system, so I'm not
sure about the specifics of the system (didn't know that the kernel has
no HIGHMEM requirement, for example). However, dmesg should still list
the memory mappings in the first 40 lines or so, so that you can see
where the memory is going. It should still be an E820 memory map, after all.
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