Re: [Xen-devel] RFC: [0/2] Remove netloop by lazy copying in netback

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

On Tue, Mar 27, 2007 at 08:36:39AM +0100, Keir Fraser wrote:
> 
> Could we shatter the ia64 guest large mappings easily? They have no benefit
> on Xen anyway apart from some inconsequential memory saving.

I think large pages are needed in general not to reduce memory usage,
but to reduce TLB usage.  I'm not sure about ia64, but for other
architectures it's quite important.

So getting rid of them will add a non-trivial cost.

Cheers,
-- 
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