>>> If you have over 3 GB of memory then you need 64 bit.
>> I really think that's myth.
> I'll confirm that. My laptop has 4G of RAM (though only 3.4G is
> addressable, but my understanding is that that's a BIOS limitation (thanks
> Dell) since both windows XP (which I dual boot) and Debian show the same
> value).
Indeed, you can go further:
% uname -a
Linux pastel 2.6.26-1-686-bigmem #1 SMP Sat Jan 10 19:13:22 UTC 2009 i686
GNU/Linux
% free
total used free shared buffers cached
Mem: 4148788 3986948 161840 0 12212 3160248
-/+ buffers/cache: 814488 3334300
Swap: 0 0 0
%
IIUC bigmem kernels can address upto 64GB of ram.
This is an amd64 CPU, so I can also run a 64bit kernel, but then
my 32bit wpa-supplicant and the rt73usb driver don't cooperate any more,
so I'd have to upgrade my userland to 64bit as well, which seems like
too much trouble.
-- Stefan
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