[PATCH 0/4] Swapping

[Izik Eidus <izike-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

this patchs allow the guest not shadowed memory to be swapped out.

to make it the must effective you should run -kvm-shadow-memory 1 (witch 
will make your machine slow)
with -kvm-shadow-memory 1,  3giga memory guest can get to be just 32mb 
on physical host!

when not using -kvm-shadow-memory, i saw 4100mb machine getting to as 
low as 168mb on the physical host (not as bad as i thought it would be, 
and surely not as bad as it can be with 41mb of shadow pages :))


it seems to be very stable, it didnt crushed to me once, and i was able 
to run:
2 3giga each windows xp  + 5giga linux guest

and
2 4.1 giga each windows xp and 2 2giga each windows xp.

few things to note:
ignore for now the ugly messages at dmesg, it is due to the fact that 
gfn_to_page try to sleep while local intrreupts disabled ( we have to 
split some emulator function so it wont do it)

and i saw some issue with the new rmapp at fedora 7 live cd, for some 
reason , in the nonpaging mode rmap_remove getting called about 50 times 
less than it need
it doesnt happen at other linux guests, need to check this... (for now 
it mean you might have about 200k of memory leak for each fedora 7 live 
cd you are runing )

also note that now kvm load much faster, beacuse no memset on all the 
memory is needed (beacuse gfn_to_page get called at run time)

(avi, and dor, note that this patch include small fix to a bug in the 
patch that i sent you)

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