On 5/16/05, Michael Holzt <kju@xxxxxxxx> wrote:
> I want to try out Xen, but i can't get it working. All i get is the
> error:
>
> (XEN) Initial guest OS requires too much space
> (XEN) (8MB is greater than 0MB limit)
>
> I'm using Xen 2.05 (self-built), with a customized xen0 kernel. My kernel does
> _not_ use initrd, because i hate initrd. The "0 MB" limit looks suspicious and
> is probably the source of my problem. How is it caused?
>
> Here is the complete bootlog:
>
> kernel /xen.gz dom0_mem=128M com1=57600,8n1
> [Multiboot-elf, <0x100000:0x3ef5c:0x360a4>, shtab=0x175078, entry=0x100000]
> module /vmlinuz-xen0 ro root=/dev/sda3 console=tty1 console=ttyS0,57600
> [Multiboot-module @ 0x176000, 0x40919c bytes]
>
> __ __ ____ ___ ____
> \ \/ /___ _ __ |___ \ / _ \ | ___|
> \ // _ \ '_ \ __) || | | ||___ \
> / \ __/ | | | / __/ | |_| | ___) |
> /_/\_\___|_| |_| |_____(_)___(_)____/
>
> http://www.cl.cam.ac.uk/netos/xen
> University of Cambridge Computer Laboratory
>
> Xen version 2.0.5 (root@xxxxxxxxxx) (gcc version 3.3.5 (Debian 1:3.3.5-6))
> Mon May 16 00:16:42 CEST 2005
> Latest ChangeSet: information unavailable
>
> (XEN) Physical RAM map:
> (XEN) 0000000000000000 - 00000000000a0000 (usable)
> (XEN) 00000000000f0000 - 0000000000100000 (reserved)
> (XEN) 0000000000100000 - 000000001f7f0000 (usable)
> (XEN) 000000001f7f0000 - 000000001f7f3000 (ACPI NVS)
> (XEN) 000000001f7f3000 - 000000001f800000 (ACPI data)
> (XEN) 00000000fec00000 - 0000000100000000 (reserved)
> (XEN) System RAM: 503MB (515648kB)
> (XEN) Xen heap: 10MB (10780kB)
> (XEN) CPU0: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
> (XEN) CPU#0: Hyper-Threading is disabled
> (XEN) CPU caps: bfebfbff 00000000 00000000 00000000
> (XEN) found SMP MP-table at 000f4ed0
> (XEN) ACPI: RSDP (v000 VIAP4M ) @
> 0x000f6870
> (XEN) ACPI: RSDT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @
> 0x1f7f3000
> (XEN) ACPI: FADT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @
> 0x1f7f3040
> (XEN) ACPI: MADT (v001 VIAP4M AWRDACPI 0x42302e31 AWRD 0x00000000) @
> 0x1f7f6c80
> (XEN) ACPI: DSDT (v001 VIAP4M AWRDACPI 0x00001000 MSFT 0x0100000d) @
> 0x00000000
> (XEN) ACPI: Local APIC address 0xfee00000
> (XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> (XEN) Processor #0 Pentium 4(tm) XEON(tm) APIC version 20
> (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled)
> (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
> (XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
> (XEN) Using ACPI for processor (LAPIC) configuration information
> (XEN) Intel MultiProcessor Specification v1.4
> (XEN) Virtual Wire compatibility mode.
> (XEN) OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000
> (XEN) I/O APIC #2 Version 17 at 0xFEC00000.
> (XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
> (XEN) Processors: 1
> (XEN) Using scheduler: Borrowed Virtual Time (bvt)
> (XEN) Initializing CPU#0
> (XEN) Detected 2404.128 MHz processor.
> (XEN) CPU0: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
> (XEN) CPU#0: Hyper-Threading is disabled
> (XEN) CPU caps: bfebfbff 00000000 00000000 00000000
> (XEN) CPU0 booted
> (XEN) enabled ExtINT on CPU#0
> (XEN) ESR value before enabling vector: 00000000
> (XEN) ESR value after enabling vector: 00000000
> (XEN) Error: only one processor found.
> (XEN) ENABLING IO-APIC IRQs
> (XEN) Setting 2 in the phys_id_present_map
> (XEN) ...changing IO-APIC physical APIC ID to 2 ... ok.
> (XEN) init IO_APIC IRQs
> (XEN) ..TIMER: vector=0x41 pin1=2 pin2=0
> (XEN) Using local APIC timer interrupts.
> (XEN) Calibrating APIC timer for CPU0...
> (XEN) ..... CPU speed is 2404.1072 MHz.
> (XEN) ..... Bus speed is 100.1710 MHz.
> (XEN) ..... bus_scale = 0x00006695
> (XEN) Time init:
> (XEN) .... System Time: 20002419ns
> (XEN) .... cpu_freq: 00000000:8F4C17D0
> (XEN) .... scale: 00000001:A9EF1633
> (XEN) .... Wall Clock: 1116279984s 170000us
> (XEN) PCI: PCI BIOS revision 2.10 entry at 0xfb300, last bus=1
> (XEN) PCI: Using configuration type 1
> (XEN) PCI: Probing PCI hardware
> (XEN) PCI: Probing PCI hardware (bus 00)
> (XEN) PCI: Using IRQ router VIA [1106/3177] at 00:11.0
> (XEN) PCI->APIC IRQ transform: (B0,I9,P0) -> 17
> (XEN) PCI->APIC IRQ transform: (B0,I17,P0) -> 15
> (XEN) PCI->APIC IRQ transform: (B0,I18,P0) -> 23
> (XEN) PCI->APIC IRQ transform: (B1,I0,P0) -> 16
> (XEN) PCI: Via IRQ fixup for 00:10.1, from 255 to 0
> (XEN) PCI: Via IRQ fixup for 00:10.2, from 255 to 0
> (XEN) mtrr: v2.0 (20020519)
> (XEN) *** LOADING DOMAIN 0 ***
> (XEN) Xen-ELF header found:
> 'GUEST_OS=linux,GUEST_VER=2.6,XEN_VER=2.0,VIRT_BASE=0xC0000000,LOADER=generic,PT_MODE_WRITABLE'
> (XEN) PHYSICAL MEMORY ARRANGEMENT:
> (XEN) Kernel image: 00c00000->0100919c
> (XEN) Initrd image: 00000000->00000000
> (XEN) Dom0 alloc.: 01400000->01420000
> (XEN) VIRTUAL MEMORY ARRANGEMENT:
> (XEN) Loaded kernel: c0100000->c053a604
> (XEN) Init. ramdisk: c053b000->c053b000
> (XEN) Phys-Mach map: c053b000->c053b080
> (XEN) Page tables: c053c000->c053f000
> (XEN) Start info: c053f000->c0540000
> (XEN) Boot stack: c0540000->c0541000
> (XEN) TOTAL: c0000000->c0800000
> (XEN) ENTRY ADDRESS: c0100000
> (XEN) Initial guest OS requires too much space
> (XEN) (8MB is greater than 0MB limit)
>
> ****************************************
> Could not set up DOM0 guest OS
> Aieee! CPU0 is toast...
> ****************************************
>
> Reboot in five seconds...
>
> Regards
> Michael
>
> --
> It's an insane world, but i'm proud to be a part of it. -- Bill Hicks
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
Michael,
It is not clear from the documentation that the parameter
dom0_mem must be in kbytes. Actually, if you go to the
docs in the home page, you will see that 128M is OK,
and it is NOT true.
May be that is the source of your problems.
Also, may be it is a good idea to update the docs, online
and in the source/rpm packages...
--
Bye,
Fernando Maior
LPIC/1 31908
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