Re: [Xen-users] Highmem for domU in 2.0.7

[Ted Kaczmarek <tedkaz@xxxxxxxxxxxxx>]

On Sat, 2005-09-10 at 14:09 +0200, Michael Paesold wrote:
> I would like to use more than 832MB for a single domU. dmesg for the 
> domU says:
> 
> BIOS-provided physical RAM map:
>   Xen: 0000000000000000 - 000000001b600000 (usable)
> Warning only 832MB will be used.
> Use a HIGHMEM enabled kernel.
> 832MB LOWMEM available.
> 
> The kernel configuration has:
> 
> CONFIG_NOHIGHMEM=y
> # CONFIG_HIGHMEM4G is not set
> 
> What options should I set here? I would like to give up to about 1.5GB 
> to a domU. Why is highmem disabled by default? Any negative effects on 
> the stability, are there known problems?
Try it and let us know :-)

On my box with unstable on it.

CONFIG_HIGHMEM4G=y

[root@inyoureyes ~]# xm info
system                 : Linux
host                   : inyoureyes.linsolutions.com
release                : 2.6.12-xen0
version                : #2 SMP Fri Sep 9 09:45:03 EDT 2005
machine                : i686
cores_per_socket       : 1
threads_per_core       : 1
cpu_mhz                : 1592
memory                 : 2047
free_memory            : 1687
xen_major              : 3
xen_minor              : 0
xen_extra              : -devel
xen_changeset          :
cc_compiler            : gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)
cc_compile_by          : root
cc_compile_domain      : linsolutions.com
cc_compile_date        : Fri Sep  9 09:02:38 EDT 2005

> 
> Best Regards,
> Michael Paesold


Regards,
Ted


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