Re: [Xen-devel] [PATCH 4 of 4] xenpaging: initial libxl support

[Olaf Hering <olaf@xxxxxxxxx>]

On Mon, Nov 07, Stefano Stabellini wrote:

> On Mon, 7 Nov 2011, Olaf Hering wrote:
> > > If tot_memkb is the pod target of the domain, we should be coherent and
> > > set it equal to target_memkb when paging is inactive.
> > 
> > So far PoD and paging are unrelated and mean different things.
> > I think the difference between max_memkb and tot_memkb could be the
> > trigger to start paging.
> 
> Yes, I think it would be better.

I have to disagree here.

After looking at the code in parse_config_data(), tot_memkb is only set
if actmem= is listed in the configfile. And if actmem= is set, its the
trigger to run xenpaging and let it work toward the specified number.
So checking for a non-null tot_memkb in create_xenpaging() looks like
the correct way to me to decide wether xenpaging should be started.


Olaf

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