Re: [Xen-devel] Regarding PAE kernel with Xen 3.2.3

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Tue, Jul 28, 2009 at 01:00:16PM +0000, Rajiv Rajaian wrote:
> Hi
> 
>  I ve installed xen 3.2.3 in DELL Server with Redhat Enterprise Server 5
> Having Quad-Core AMD Opteron(tm) Processor 8350 & 32 GB RAM
> 
> While booting with PAE kernel  Memory shows 32 GB RAM
> 
> [root@careserver ~]# cat /proc/meminfo
> MemTotal:     33264952 kB
> MemFree:      28127132 kB
> 
> [root@careserver ~]# uname -r
> 2.6.18-8.el5PAE
> 
> While booting with xen kernel It shows only 13GB RAM in proc/meminfo
> as well as the xm info
> 

Is this 32bit kernel/xen? I think 32bit PAE Xen hypervisor is limited to 16 GB 
max
memory support.

You need 64bit Xen for 32GB RAM. dom0 kernel can still be 32bit PAE, if you
need that.

> Here the xen rpms I ve installed
> 
> [root@careserver ~]# rpm -qa | grep xen
> kernel-xen-2.6.18-128.2.1.el5
> xen-devel-3.2.3-0xs
> xen-libs-3.2.3-0xs
> xen-3.2.3-0xs
> xen-debuginfo-3.2.3-0xs
> 

where did you get these rpms? 

Have you tried Xen 3.3.1 or 3.4.0 from http://www.gitco.de/repo/ ?

> Will it show only the partial physical memory ?? .. Or any thing else
> to be configured to get the total 32GB RAM with xen kernel??
> How to get all the RAM with PAE support ??
> Please give your valuable suggestions
> 

-- Pasi

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