svn commit: r246204 - head/sys/arm/include

[Oleksandr Tymoshenko]

On 2013-02-01, at 2:26 AM, Andre Oppermann <andre at freebsd.org> wrote:

> Author: andre
> Date: Fri Feb  1 10:26:31 2013
> New Revision: 246204
> URL: http://svnweb.freebsd.org/changeset/base/246204
> 
> Log:
>  Add VM_KMEM_SIZE_SCALE parameter set to 2 (50%) for all ARM platforms.
> 
>  VM_KMEM_SIZE_SCALE specifies which fraction of the available physical
>  memory, after deduction of the kernel itself and other early statically
>  allocated memory, can be used for the kmem_map.  The kmem_map provides
>  for all UMA/malloc allocations in KVM space.
> 
>  Previously ARM was using a fixed kmem_map size of (12*1024*1024) = 12MB
>  without regard to effectively available memory.  This is too small for
>  recent ARM SoC with more than 128MB of RAM.
> 
>  For reference a description of others related kmem_map parameters:
> 
>   VM_KMEM_SIZE		default start size of kmem_map if SCALE is
>  			not defined
>   VM_KMEM_SIZE_MIN	hard floor on the kmem_map size
>   VM_KMEM_SIZE_MAX	hard ceiling on the kmem_map size
>   VM_KMEM_SIZE_SCALE	fraction of the available real memory to
>  			be used for the kmem_map, limited by the
>  			MIN and MAX parameters.
> 
>  Tested by:	ian
>  MFC after:	1 week

Hi Andre,

this commit brake my Pandaboard with 1GB of memory. It panics early with 
following message:

kmem_suballoc: bad status return of 3 

If you need additional info/debugging - just let me know.