Increasing KVM on amd64

[Alan Cox]

Tz-Huan Huang wrote:

>On Sun, Jun 8, 2008 at 7:59 AM, Alan Cox <alc at cs.rice.edu> wrote:
>  
>
>>You can download a patch from
>>http://www.cs.rice.edu/~alc/amd64_kvm_6GB.patch that increases amd64's
>>kernel virtual address space to 6GB.  This patch also increases the default
>>for the kmem map to almost 2GB.  I believe that kernel loadable modules
>>still work.  However, I suspect that mini-dumps are broken.
>>
>>I don't plan on committing this patch in its current form.  Some of the
>>changes are done in a hackish way.  I am, however, curious to hear whether
>>or not it works for you.
>>    
>>
>
>Thanks for the patch. I applied it on 7-stable but got failed on pmap.c.
>
>  
>
[snip]

>We have no machine running 8-current with more than 6G memory now...
>
>  
>

Sorry, at this point the patch is only applicable to HEAD.  That said, 
the failed chunk is probably easily applied by hand to RELENG_7.

Thanks,
Alan