Re: [PATCH] shrinker support for the mmu cache

[Avi Kivity <avi@qumranet.com>]

Marcelo Tosatti wrote:
> On Wed, Mar 12, 2008 at 08:13:41PM +0200, Izik Eidus wrote:
>   
>> this patch simply register the mmu cache with the shrinker.
>>     
>
> Hi Izik,
>
> Nice.
>
> I think you want some sort of aging mechanism here. Walk through all
> translations of a shadow page clearing the referenced bit of all
> mappings it holds (and moving pages with any accessed translation to the
> head of the list).
>   

While aging is not too hard to do, I don't think it would add much in 
practice; we rarely observe mmu shadow pages being recycled due to 
memory pressure.  So this is mostly helpful for preventing a VM from 
pinning memory when under severe memory pressure, where we don't expect 
good performance anyway.


-- 
error compiling committee.c: too many arguments to function


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