expanding amd64 past the 1TB limit

[Konstantin Belousov]

On Wed, Jun 26, 2013 at 10:11:44AM -0600, Chris Torek wrote:
> diff --git a/conf/options.amd64 b/conf/options.amd64
> index 90348b7..f3ce505 100644
> --- a/conf/options.amd64
> +++ b/conf/options.amd64
> @@ -1,6 +1,7 @@
>  # $FreeBSD$
>  # Options specific to AMD64 platform kernels
>  
> +AMD64_HUGE		opt_global.h

Is this option needed ? The SMAP is already parsed at the time of
pmap_bootstrap() call, so you could determine the amount of physical
memory and size the KVA map accordingly ?
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