Re: [Xen-users] Dom0 won't come up, Fedora 9

[Mike Brady <mike.brady@xxxxxxxxxxxxxx>]

The Fedora 9 Xen RPMs can only be run as a DomU.  You will have to use
another distro for Dom0.

On Sat, 2008-06-14 at 14:37 -0400, Martin Vuille wrote:
> Trying to get Xen going on Fedora 9. Xen was installed from the 
> distro RPMs. Xen version is 3.2.0 and the linux-xen version is 
> 2.6.25.3.
> 
> Xen seems to come up fine, but the system just hangs at the 
> point where booting of Dom0 should start. There is absolutely
> no output from Dom0.
> 
> I configured Xen to log to a serial port and captured the output 
> below. Any suggestions on how to continue debugging this are 
> welcome.
> 
> MV
> 
> -----
>  __  __            _____  ____    ___  
>  \ \/ /___ _ __   |___ / |___ \  / _ \ 
>   \  // _ \ '_ \    |_ \   __) || | | |
>   /  \  __/ | | |  ___) | / __/ | |_| |
>  /_/\_\___|_| |_| |____(_)_____(_)___/ 
>                                        
> (XEN) Xen version 3.2.0 (mockbuild@[unknown]) (gcc version 4.3.0 
> 20080428 (Red Hat 4.3.0-8) (GCC) ) Tue May 13 11:43:44 EDT 2008
> (XEN) Latest ChangeSet: unavailable
> (XEN) Command line: com1=115200,8n1 console=com1 conswitch=ax
> (XEN) Video information:
> (XEN)  VGA is text mode 80x25, font 8x16
> (XEN)  VBE/DDC methods: V2; EDID transfer time: 2 seconds
> (XEN) Disc information:
> (XEN)  Found 2 MBR signatures
> (XEN)  Found 2 EDD information structures
> (XEN) Xen-e820 RAM map:
> (XEN)  0000000000000000 - 000000000009fc00 (usable)
> (XEN)  000000000009fc00 - 00000000000a0000 (reserved)
> (XEN)  00000000000e6000 - 0000000000100000 (reserved)
> (XEN)  0000000000100000 - 000000007ffc0000 (usable)
> (XEN)  000000007ffc0000 - 000000007ffce000 (ACPI data)
> (XEN)  000000007ffce000 - 000000007fff0000 (ACPI NVS)
> (XEN)  000000007fff0000 - 0000000080000000 (reserved)
> (XEN)  00000000ffb80000 - 0000000100000000 (reserved)
> (XEN) System RAM: 2047MB (2096508kB)
> (XEN) Xen heap: 9MB (10068kB)
> (XEN) Domain heap initialised: DMA width 32 bits
> (XEN) PAE enabled, limit: 16 GB
> (XEN) Processor #0 15:3 APIC version 20
> (XEN) Processor #1 15:3 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 3000.212 MHz processor.
> (XEN) CPU0: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 04
> (XEN) Booting processor 1/1 eip 8c000
> (XEN) CPU1: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 04
> (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) AMD IOMMU: Disabled
> (XEN) *** LOADING DOMAIN 0 ***
> (XEN) elf_parse_binary: phdr: paddr=0x400000 memsz=0x320000
> (XEN) elf_parse_binary: phdr: paddr=0x720000 memsz=0x145000
> (XEN) elf_parse_binary: memory: 0x400000 -> 0x865000
> (XEN) elf_xen_parse_note: GUEST_OS = "linux"
> (XEN) elf_xen_parse_note: GUEST_VERSION = "2.6"
> (XEN) elf_xen_parse_note: XEN_VERSION = "xen-3.0"
> (XEN) elf_xen_parse_note: VIRT_BASE = 0xc0000000
> (XEN) elf_xen_parse_note: ENTRY = 0xc075e000
> (XEN) elf_xen_parse_note: HYPERCALL_PAGE = 0xc07ab000
> (XEN) elf_xen_parse_note: FEATURES = "!
> writable_page_tables|pae_pgdir_above_4gb"
> (XEN) elf_xen_parse_note: PAE_MODE = "yes"
> (XEN) elf_xen_parse_note: LOADER = "generic"
> (XEN) elf_xen_addr_calc_check: ELF_PADDR_OFFSET unset, using 0x0
> (XEN) elf_xen_addr_calc_check: addresses:
> (XEN)     virt_base        = 0xc0000000
> (XEN)     elf_paddr_offset = 0x0
> (XEN)     virt_offset      = 0xc0000000
> (XEN)     virt_kstart      = 0xc0400000
> (XEN)     virt_kend        = 0xc0865000
> (XEN)     virt_entry       = 0xc075e000
> (XEN)  Xen  kernel: 32-bit, PAE, lsb
> (XEN)  Dom0 kernel: 32-bit, PAE, lsb, paddr 0x400000 -> 0x865000
> (XEN) PHYSICAL MEMORY ARRANGEMENT:
> (XEN)  Dom0 alloc.:   000000003c000000->000000003e000000 (477028 
> pages to be allocated)
> (XEN) VIRTUAL MEMORY ARRANGEMENT:
> (XEN)  Loaded kernel: c0400000->c0865000
> (XEN)  Init. ramdisk: c0865000->c0e7c400
> (XEN)  Phys-Mach map: c0e7d000->c1056d90
> (XEN)  Start info:    c1057000->c1057474
> (XEN)  Page tables:   c1058000->c1067000
> (XEN)  Boot stack:    c1067000->c1068000
> (XEN)  TOTAL:         c0000000->c1400000
> (XEN)  ENTRY ADDRESS: c075e000
> (XEN) Dom0 has maximum 2 VCPUs
> (XEN) elf_load_binary: phdr 0 at 0xc0400000 -> 0xc0720000
> (XEN) elf_load_binary: phdr 1 at 0xc0720000 -> 0xc07a7d08
> (XEN) Initrd len 0x617400, start at 0xc0865000
> (XEN) Scrubbing Free RAM: .done.
> (XEN) Xen trace buffers: disabled
> (XEN) Std. Loglevel: Errors and warnings
> (XEN) Guest Loglevel: Nothing (Rate-limited: Errors and 
> warnings)
> (XEN) *** Serial input -> Xen (type 'CTRL-a' three times to 
> switch input to DOM0)
> (XEN) Freed 96kB init memory.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 00000400 from 
> 00000000:0000ffff to ffffffff:ffffffff.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 00000404 from 
> 00000000:00018000 to ffffffff:ffffffff.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 00000408 from 
> 00000000:00000080 to ffffffff:ffffffff.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 0000040c from 
> 00000000:0000007e to ffffffff:ffffffff.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 00000400 from 
> 00000000:0000ffff to ffffffff:ffffffff.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 00000404 from 
> 00000000:00018000 to ffffffff:ffffffff.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 00000408 from 
> 00000000:00000080 to ffffffff:ffffffff.
> (XEN) traps.c:1946:d0 Domain attempted WRMSR 0000040c from 
> 00000000:0000007e to ffffffff:ffffffff.
> (XEN) traps.c:1838:d0 Attempt to change unmodifiable CR0 flags.
> 
> 
> 
> 
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