[Xen-users] Re: Not enough RAM for domain 0 allocation.

To:	xen-users@xxxxxxxxxxxxxxxxxxx
Subject:	[Xen-users] Re: Not enough RAM for domain 0 allocation.
From:	Luca <lucarx76@xxxxxxxxx>
Date:	Mon, 11 Aug 2008 09:57:48 -0700
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Hi all,
I haven't been able to boot Xen using a ramdisk whose size is 450M. I get the "Not enough RAM for domain 0 allocation" message while booting Xen. Just adding the boot's output. Any hints on how to proceed?
Thanks.

__ __            _____ _   _____
\ \/ /___ _ __   |___ / / | |___ /
\ // _ \ '_ \    |_ \ | |   |_ \
/ \ __/ | | | ___) || |_ ___) |
/_/\_\___|_| |_| |____(_)_(_)____/

http://www.cl.cam.ac.uk/netos/xen
University of Cambridge Computer Laboratory

Xen version 3.1.3 (root@xxxxxxxxx) (gcc version 4.1.2 20070925 (Red Hat 4.1.2-3
3)) Fri Aug 8 10:11:40 PDT 2008
Latest ChangeSet: unavailable

(XEN) Command line: com1=115200,8n1 noreboot
(XEN) Video information:
(XEN) VGA is text mode 80x25, font 8x16
(XEN) VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN) Found 1 MBR signatures
(XEN) Found 1 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN) 0000000000000000 - 000000000009fc00 (usable)
(XEN) 000000000009fc00 - 00000000000a0000 (reserved)
(XEN) 00000000000e0000 - 0000000000100000 (reserved)
(XEN) 0000000000100000 - 00000000bd68e000 (usable)
(XEN) 00000000bd68e000 - 00000000bd6db000 (ACPI NVS)
(XEN) 00000000bd6db000 - 00000000be5f3000 (usable)
(XEN) 00000000be5f3000 - 00000000be5ff000 (reserved)
(XEN) 00000000be5ff000 - 00000000be6a3000 (usable)
(XEN) 00000000be6a3000 - 00000000be6a4000 (ACPI NVS)
(XEN) 00000000be6a4000 - 00000000be6a7000 (ACPI data)
(XEN) 00000000be6a7000 - 00000000be6f2000 (ACPI NVS)
(XEN) 00000000be6f2000 - 00000000be6ff000 (ACPI data)
(XEN) 00000000be6ff000 - 00000000be700000 (usable)
(XEN) 00000000be700000 - 00000000bf000000 (reserved)
(XEN) 00000000ffe00000 - 0000000100000000 (reserved)
(XEN) System RAM: 3045MB (3119016
(XEN) Xen heap: 9MB (10172kB)
(XEN) Domain heap initialised: DMA width 32 bits
(XEN) PAE enabled, limit: 16 GB
(XEN) Processor #0 6:15 APIC version 20
(XEN) Processor #1 6:15 APIC version 20
(XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
(XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 2400.138 MHz processor.
(XEN) HVM: VMX enabled
(XEN) VMX: MSR intercept bitmap enabled
(XEN) CPU0: Intel(R) Core(TM)2 CPU         E6600 @
(XEN) Booting processor 1/1 eip 90000
(XEN) CPU1: Intel(R) Core(TM)2 CPU         E6600 @ 2.40GHz stepping 05
(XEN) Total of 2 processors activated.
(XEN) ENABLING IO-APIC IRQs
(XEN) -> Using new ACK method
(XEN) Platform timer overflows in 234 jiffies.
(XEN) Platform timer is 3.579MHz ACPI PM Timer
(XEN) Brought up 2 CPUs
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Xen kernel: 32-bit, PAE, lsb
(XEN) Dom0 kernel: 32-bit, PAE, lsb, paddr 0xc0100000 -> 0xc0445cbc
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Not enough RAM for domain 0 allocation.
(XEN) ****************************************
(XEN)
(XEN) Manual reset required ('noreboot' specified)

Thanks,
Luca

On Thu, Aug 7, 2008 at 10:50 PM, Luca <lucarx76@xxxxxxxxx> wrote:

Hi all,
I'm tryint to boot XEN. If I use a ramdisk bigger than 256M I get the following error

(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Not enough RAM for domain 0 allocation.
(XEN) ****************************************

My system has 3G of RAM.

Has anyone had the same problem?

Thanks,
Luca

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[Xen-users] Re: Not enough RAM for domain 0 allocation.