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

To: <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] Dom0 won't come up, Fedora 9
From: "Martin Vuille" <martin@xxxxxxxxxxxxxxxx>
Date: Sat, 14 Jun 2008 14:37:26 -0400
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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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