[Fedora-xen] 64-Bit RAM Detection >4GB?

[Dustin Henning]

>-----Original Message-----
>From: fedora-xen-bounces at redhat.com [mailto:fedora-xen-bounces at redhat.com] On Behalf Of Dale Bewley
>Sent: Friday, October 19, 2007 11:46
>To: fedora-xen
>Subject: Re: [Fedora-xen] 64-Bit RAM Detection >4GB?
>
>I have 4 procs with 16G RAM and no mem paramters in grub at all, and it looks like this:
>
>Linux h 2.6.20-2931.fc7xen #1 SMP Mon Aug 13 10:11:56 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
>
># grep 'model name' /proc/cpuinfo
>model name      : AMD Opteron(tm) Processor 852
>model name      : AMD Opteron(tm) Processor 852
>model name      : AMD Opteron(tm) Processor 852
>model name      : AMD Opteron(tm) Processor 852
>
># grep Total /proc/meminfo
>MemTotal:     13335552 kB
>SwapTotal:     5261240 kB
>VmallocTotal: 34359738367 kB
>
># xm info |grep total
>total_memory           : 16319
>
>I have 3 domU's running with each allocated 1G, so 16-3=13 which I suppose explains the MemTotal line above from the perspective of dom0.
>
>
>On an identical server running RHEL with no xen and I see something a bit different:
>
>Red Hat Enterprise Linux AS release 4 (Nahant Update 5)
>Linux z 2.6.9-55.0.2.ELsmp #1 SMP Tue Jun 12 17:58:20 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
>
># grep Total /proc/meminfo
>MemTotal:     16359284 kB
>HighTotal:           0 kB
>LowTotal:     16359284 kB
>SwapTotal:     5261240 kB
>VmallocTotal: 536870911 kB
>HugePages_Total:     0
>
>Not sure if that was helpful.
>--
>Dale Bewley - Unix Administrator - Shields Library - UC Davis
>GPG: 0xB098A0F3 0D5A 9AEB 43F4 F84C 7EFD  1753 064D 2583 B098 A0F3

Dale,
	Could you tell me if you passed any arguments to the installer during your initial install?  Also, can you show me the appropriate portion of your grub.conf?  I would like to see if maybe it is different than mine even though they are both pre-packaged installs.  I had a machine with 2.6.20-2931.fc7xen, so I copied that to the machine in question, and it also only shows 3.1GiB for me.  I compared the config files for that kernel and the one I was using, and they are identical (minus version and date comment lines), so that was as I expected, but it makes it less likely that my problem is a version problem and more likely that something else is haywire.  Thanks,
	Dustin