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Date: Sun, 29 May 2005 20:32:45 -0600
From: Scott Long <scottl@samsco.org>
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To: Hiroki Sato <hrs@freebsd.org>
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Cc: sparc64@freebsd.org
Subject: Re: E4500 with 24GB RAM
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Hiroki Sato wrote:
> Hi,
> 
>  I tried RELENG_5 on 10-way E4500 with 24GB RAM but the following
>  panic occurred just after loading the kernel:
> 
>  |FreeBSD 5.4-STABLE #0: Thu May 26 15:53:20 JST 2005
>  |   hrs@e4500-2.allbsd.org:/usr/obj/usr/src/sys/E4500_2
>  |real memory  = 25769803776 (24576 MB)
>  |kmem_suballoc: bad status return of 3.
>  |panic: kmem_suballoc
>  |cpuid = 0
> 
>  The box worked fine after disabling some of the memory modules
>  by OpenBoot.  4GB RAM worked, but more than that didn't.
> 
>  Is it currently difficult to handle memory more than 4GB
>  on FreeBSD/sparc64?  If there is some workaround or
>  something I can help, please let me know.  Thanks.
> 

I'd guess that you're the first to have access to so much memory
and a machine to hold it.  The error means that vm_map_find()
returned KERN_NO_SPACE.  It could be that there is a 64-bit bug
in the code, or it could be that the page tables to index so much
memory consume all available space in the kernel map.

Scott