[Xen-devel] Re: [PATCH] XEN_DOMAIN_MEMORY options.

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

> > >>>What's the rationale?
> > >>>
> > >>>      J
> > >>
> > >>The first patch is actually bug fix. You can not define just "int"
> > >>without description in Kconfig. As the result this option will not be
> > >>visible in menuconfig. Even if you will change it in .config make
> > >>oldconfig will set it up for default value. So you need to add any
> > >>description to it as all others int options have.
> > >
> > >No, that was deliberate, because I don't really think there's a need to
> > >change it.
> > >
> > 
> > From that point of view it's not clear why this option is still in Kconfig?
> 
> Well, we do need to alter it to 512GB. Actually -  putting that extra
> burden on initial pagetables to reserve extra 384 pages might be a bit
> too much. Even thought later on we reclaim it if we do not use it.

Jeremy, without that change, you cannot specify

CONFIG_XEN_MAX_DOMAIN_MEMORY=512

if the distro desires to do so. Well, you can write it in the .config,
but the moment you compile, the oldconfig rewrites it to 128.


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