Re: [RFC PATCH 0/15]: PVH xen: Patches for PVH guests

["Roger Pau Monné" <roger.pau@citrix.com>]

On 14/01/13 23:40, Mukesh Rathor wrote:
> On Mon, 14 Jan 2013 18:28:11 +0100
> Roger Pau Monné <roger.pau@citrix.com> wrote:
> 
>> On 12/01/13 02:22, Mukesh Rathor wrote:
>>>
>>> Hi All,
>>>
>>> I'm excited (and a bit nervous) to finally submit xen PVH patches
>>> for your input. This is Phase I.  Kindly ignore the 'noinline' for
>>> now, it helps me debug. Of course, in the final patches that won't
>>> be there.
>>
>> Hi Mukesh,
>>
>> I would like to give a try to PVH, but I'm having some failures while
>> applying the patches, could you tell me the base commit on top of
>> which I should apply this series?
>>
>> Thanks, Roger.
> 
> Hi Roger, I realized over the weekend I forgot to include the 
> c/s number.  It's 26124. I'll be refreshing my tree again over the next 
> few days while the patches are being reviewed.
> 
> Thanks,
> Mukesh
> 

Hello Mukesh,

I've been able to apply and compile your patches correctly on top of 
c/s 26124. I've also fetched branch stable/pvh.v7 from Konrad's Linux 
tree, enabled the CONFIG_XEN_X86_PVH option and compiled the Linux 
kernel, but I'm unable to get the kernel to run in PVH mode, it defaults 
to PV mode, do I need to use a PVH Dom0 in order to create PVH guests?

Here is the configuration file:

kernel="/boot/vmlinuz-3.7.0-rc3+"
ramdisk="/boot/initrd.img-3.7.0-rc3+"
extra="debug loglevel=9"
memory=1024
vcpus=2
name = "pvh"
on_crash="preserve"

The output of xl -vvv create pvh.cfg:

Parsing config from pvh.cfg
libxl: debug: libxl_create.c:1194:do_domain_create: ao 0x1173da0: create: how=(nil) callback=(nil) poller=0x1173e00
libxl: debug: libxl_create.c:679:initiate_domain_create: running bootloader
libxl: debug: libxl_bootloader.c:327:libxl__bootloader_run: no bootloader configured, using user supplied kernel
libxl: debug: libxl_event.c:562:libxl__ev_xswatch_deregister: watch w=0x1174160: deregister unregistered
libxl: debug: libxl_numa.c:435:libxl__get_numa_candidate: New best NUMA placement candidate found: nr_nodes=1, nr_cpus=2, nr_vcpus=4, free_memkb=5030
libxl: detail: libxl_dom.c:192:numa_place_domain: NUMA placement candidate with 1 nodes, 2 cpus and 5030 KB free selected
domainbuilder: detail: xc_dom_allocate: cmdline="debug loglevel=9", features="(null)"
libxl: debug: libxl_dom.c:395:libxl__build_pv: pv kernel mapped 0 path /boot/vmlinuz-3.7.0-rc3+

domainbuilder: detail: xc_dom_kernel_file: filename="/boot/vmlinuz-3.7.0-rc3+"
domainbuilder: detail: xc_dom_malloc_filemap    : 3791 kB
domainbuilder: detail: xc_dom_ramdisk_file: filename="/boot/initrd.img-3.7.0-rc3+"
domainbuilder: detail: xc_dom_malloc_filemap    : 3754 kB
domainbuilder: detail: xc_dom_boot_xen_init: ver 4.3, caps xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 
domainbuilder: detail: xc_dom_parse_image: called
domainbuilder: detail: xc_dom_find_loader: trying ELF-generic loader ... 
domainbuilder: detail: loader probe failed
domainbuilder: detail: xc_dom_find_loader: trying Linux bzImage loader ... 
domainbuilder: detail: xc_dom_malloc            : 13466 kB
domainbuilder: detail: xc_dom_do_gunzip: unzip ok, 0x3ab847 -> 0xd26920
domainbuilder: detail: loader probe OK
xc: detail: elf_parse_binary: phdr: paddr=0x1000000 memsz=0x7e4000
xc: detail: elf_parse_binary: phdr: paddr=0x1800000 memsz=0x8b0f0
xc: detail: elf_parse_binary: phdr: paddr=0x188c000 memsz=0x13e00
xc: detail: elf_parse_binary: phdr: paddr=0x18a0000 memsz=0x573000
xc: detail: elf_parse_binary: memory: 0x1000000 -> 0x1e13000
xc: detail: elf_xen_parse_note: GUEST_OS = "linux"
xc: detail: elf_xen_parse_note: GUEST_VERSION = "2.6"
xc: detail: elf_xen_parse_note: XEN_VERSION = "xen-3.0"
xc: detail: elf_xen_parse_note: VIRT_BASE = 0xffffffff80000000
xc: detail: elf_xen_parse_note: ENTRY = 0xffffffff818a0210
xc: detail: elf_xen_parse_note: HYPERCALL_PAGE = 0xffffffff81001000
xc: detail: elf_xen_parse_note: FEATURES = "!writable_page_tables|pae_pgdir_above_4gb"
xc: detail: elf_xen_parse_note: PAE_MODE = "yes"
xc: detail: elf_xen_parse_note: LOADER = "generic"
xc: detail: elf_xen_parse_note: unknown xen elf note (0xd)
xc: detail: elf_xen_parse_note: SUSPEND_CANCEL = 0x1
xc: detail: elf_xen_parse_note: HV_START_LOW = 0xffff800000000000
xc: detail: elf_xen_parse_note: PADDR_OFFSET = 0x0
xc: detail: elf_xen_addr_calc_check: addresses:
xc: detail:     virt_base        = 0xffffffff80000000
xc: detail:     elf_paddr_offset = 0x0
xc: detail:     virt_offset      = 0xffffffff80000000
xc: detail:     virt_kstart      = 0xffffffff81000000
xc: detail:     virt_kend        = 0xffffffff81e13000
xc: detail:     virt_entry       = 0xffffffff818a0210
xc: detail:     p2m_base         = 0xffffffffffffffff
domainbuilder: detail: xc_dom_parse_elf_kernel: xen-3.0-x86_64: 0xffffffff81000000 -> 0xffffffff81e13000
domainbuilder: detail: xc_dom_mem_init: mem 1024 MB, pages 0x40000 pages, 4k each
domainbuilder: detail: xc_dom_mem_init: 0x40000 pages
domainbuilder: detail: xc_dom_boot_mem_init: called
domainbuilder: detail: x86_compat: guest xen-3.0-x86_64, address size 64
domainbuilder: detail: xc_dom_malloc            : 2048 kB
domainbuilder: detail: xc_dom_build_image: called
domainbuilder: detail: xc_dom_alloc_segment:   kernel       : 0xffffffff81000000 -> 0xffffffff81e13000  (pfn 0x1000 + 0xe13 pages)
domainbuilder: detail: xc_dom_pfn_to_ptr: domU mapping: pfn 0x1000+0xe13 at 0x7f20ccbf9000
xc: detail: _elf_load_binary: phdr 0 at 0x0x7f20ccbf9000 -> 0x0x7f20cd3dd000
xc: detail: _elf_load_binary: phdr 1 at 0x0x7f20cd3f9000 -> 0x0x7f20cd4840f0
xc: detail: _elf_load_binary: phdr 2 at 0x0x7f20cd485000 -> 0x0x7f20cd498e00
xc: detail: _elf_load_binary: phdr 3 at 0x0x7f20cd499000 -> 0x0x7f20cd51f000
domainbuilder: detail: xc_dom_alloc_segment:   ramdisk      : 0xffffffff81e13000 -> 0xffffffff826a6000  (pfn 0x1e13 + 0x893 pages)
domainbuilder: detail: xc_dom_pfn_to_ptr: domU mapping: pfn 0x1e13+0x893 at 0x7f20cc366000
domainbuilder: detail: xc_dom_do_gunzip: unzip ok, 0x3aab4e -> 0x892210
domainbuilder: detail: xc_dom_alloc_segment:   phys2mach    : 0xffffffff826a6000 -> 0xffffffff828a6000  (pfn 0x26a6 + 0x200 pages)
domainbuilder: detail: xc_dom_pfn_to_ptr: domU mapping: pfn 0x26a6+0x200 at 0x7f20cc166000
domainbuilder: detail: xc_dom_alloc_page   :   start info   : 0xffffffff828a6000 (pfn 0x28a6)
domainbuilder: detail: xc_dom_alloc_page   :   xenstore     : 0xffffffff828a7000 (pfn 0x28a7)
domainbuilder: detail: xc_dom_alloc_page   :   console      : 0xffffffff828a8000 (pfn 0x28a8)
domainbuilder: detail: nr_page_tables: 0x0000ffffffffffff/48: 0xffff000000000000 -> 0xffffffffffffffff, 1 table(s)
domainbuilder: detail: nr_page_tables: 0x0000007fffffffff/39: 0xffffff8000000000 -> 0xffffffffffffffff, 1 table(s)
domainbuilder: detail: nr_page_tables: 0x000000003fffffff/30: 0xffffffff80000000 -> 0xffffffffbfffffff, 1 table(s)
domainbuilder: detail: nr_page_tables: 0x00000000001fffff/21: 0xffffffff80000000 -> 0xffffffff82bfffff, 22 table(s)
domainbuilder: detail: xc_dom_alloc_segment:   page tables  : 0xffffffff828a9000 -> 0xffffffff828c2000  (pfn 0x28a9 + 0x19 pages)
domainbuilder: detail: xc_dom_pfn_to_ptr: domU mapping: pfn 0x28a9+0x19 at 0x7f20d0ef2000
domainbuilder: detail: xc_dom_alloc_page   :   boot stack   : 0xffffffff828c2000 (pfn 0x28c2)
domainbuilder: detail: xc_dom_build_image  : virt_alloc_end : 0xffffffff828c3000
domainbuilder: detail: xc_dom_build_image  : virt_pgtab_end : 0xffffffff82c00000
domainbuilder: detail: xc_dom_boot_image: called
domainbuilder: detail: arch_setup_bootearly: doing nothing
domainbuilder: detail: xc_dom_compat_check: supported guest type: xen-3.0-x86_64 <= matches
domainbuilder: detail: xc_dom_compat_check: supported guest type: xen-3.0-x86_32p
domainbuilder: detail: xc_dom_compat_check: supported guest type: hvm-3.0-x86_32
domainbuilder: detail: xc_dom_compat_check: supported guest type: hvm-3.0-x86_32p
domainbuilder: detail: xc_dom_compat_check: supported guest type: hvm-3.0-x86_64
domainbuilder: detail: xc_dom_update_guest_p2m: dst 64bit, pages 0x40000
domainbuilder: detail: clear_page: pfn 0x28a8, mfn 0x13e27e
domainbuilder: detail: clear_page: pfn 0x28a7, mfn 0x13e27f
domainbuilder: detail: xc_dom_pfn_to_ptr: domU mapping: pfn 0x28a6+0x1 at 0x7f20d0f13000
domainbuilder: detail: start_info_x86_64: called
domainbuilder: detail: setup_hypercall_page: vaddr=0xffffffff81001000 pfn=0x1001
domainbuilder: detail: domain builder memory footprint
domainbuilder: detail:    allocated
domainbuilder: detail:       malloc             : 15665 kB
domainbuilder: detail:       anon mmap          : 0 bytes
domainbuilder: detail:    mapped
domainbuilder: detail:       file mmap          : 7546 kB
domainbuilder: detail:       domU mmap          : 25344 kB
domainbuilder: detail: arch_setup_bootlate: shared_info: pfn 0x0, mfn 0xdfb0a
domainbuilder: detail: shared_info_x86_64: called
domainbuilder: detail: vcpu_x86_64: called
domainbuilder: detail: vcpu_x86_64: cr3: pfn 0x28a9 mfn 0x13e27d
domainbuilder: detail: launch_vm: called, ctxt=0x7fff313e1a60
domainbuilder: detail: xc_dom_release: called
libxl: debug: libxl_event.c:1668:libxl__ao_progress_report: ao 0x1173da0: progress report: ignored
libxl: debug: libxl_event.c:1500:libxl__ao_complete: ao 0x1173da0: complete, rc=0
libxl: debug: libxl_create.c:1207:do_domain_create: ao 0x1173da0: inprogress: poller=0x1173e00, flags=ic
libxl: debug: libxl_event.c:1472:libxl__ao__destroy: ao 0x1173da0: destroy
Daemon running with PID 15914
xc: debug: hypercall buffer: total allocations:204 total releases:204
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:194 misses:4 toobig:6

Features only lists "!writable_page_tables|pae_pgdir_above_4gb", 
which is strange...

And the dmesg of the DomU:

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.7.0-rc3+ (root@loki) (gcc version 4.4.5 (Debian 4.4.5-8) ) #0 SMP Tue Jan 15 12:34:15 GMT 2013
[    0.000000] Command line: debug loglevel=9
[    0.000000] ACPI in unprivileged domain disabled
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] Xen: [mem 0x0000000000000000-0x000000000009ffff] usable
[    0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved
[    0.000000] Xen: [mem 0x0000000000100000-0x000000003fffffff] usable
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI not present or invalid.
[    0.000000] e820: update [mem 0x00000000-0x0000ffff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] No AGP bridge found
[    0.000000] e820: last_pfn = 0x40000 max_arch_pfn = 0x400000000
[    0.000000] initial memory mapped: [mem 0x00000000-0x026a5fff]
[    0.000000] Base memory trampoline at [ffff88000009a000] 9a000 size 24576
[    0.000000] init_memory_mapping: [mem 0x00000000-0x3fffffff]
[    0.000000]  [mem 0x00000000-0x3fffffff] page 4k
[    0.000000] kernel direct mapping tables up to 0x3fffffff @ [mem 0x01c11000-0x01e12fff]
[    0.000000] xen: setting RW the range 1dfb000 - 1e13000
[    0.000000] RAMDISK: [mem 0x01e13000-0x026a5fff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x00010000-0x00ffffff]
[    0.000000]   DMA32    [mem 0x01000000-0xffffffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x00010000-0x0009ffff]
[    0.000000]   node   0: [mem 0x00100000-0x3fffffff]
[    0.000000] On node 0 totalpages: 262032
[    0.000000]   DMA zone: 56 pages used for memmap
[    0.000000]   DMA zone: 6 pages reserved
[    0.000000]   DMA zone: 3922 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 3528 pages used for memmap
[    0.000000]   DMA32 zone: 254520 pages, LIFO batch:31
[    0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs
[    0.000000] No local APIC present
[    0.000000] APIC: disable apic facility
[    0.000000] APIC: switched to apic NOOP
[    0.000000] nr_irqs_gsi: 16
[    0.000000] e820: [mem 0x40000000-0xffffffff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.3-unstable (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:1
[    0.000000] PERCPU: Embedded 27 pages/cpu @ffff88003fa00000 s81408 r8192 d20992 u1048576
[    0.000000] pcpu-alloc: s81408 r8192 d20992 u1048576 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 1 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 258442
[    0.000000] Kernel command line: debug loglevel=9
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] __ex_table already sorted, skipping sort
[    0.000000] Checking aperture...
[    0.000000] No AGP bridge found
[    0.000000] Memory: 1008584k/1048576k available (4991k kernel code, 448k absent, 39544k reserved, 3755k data, 596k init)
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	CONFIG_RCU_FANOUT set to non-default value of 32
[    0.000000] 	RCU dyntick-idle grace-period acceleration is enabled.
[    0.000000] 	RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[    0.000000] NR_IRQS:4352 nr_irqs:288 16
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] console [hvc0] enabled
[    0.000000] Xen: using vcpuop timer interface
[    0.000000] installing Xen timer for CPU 0
[    0.000000] tsc: Detected 2400.138 MHz processor
[    0.004000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4800.27 BogoMIPS (lpj=9600552)
[    0.004000] pid_max: default: 32768 minimum: 301
[    0.004000] Mount-cache hash table entries: 256
[    0.004000] Initializing cgroup subsys cpuacct
[    0.004000] Initializing cgroup subsys devices
[    0.004000] Initializing cgroup subsys freezer
[    0.004000] Initializing cgroup subsys blkio
[    0.004000] Initializing cgroup subsys perf_event
[    0.004000] CPU: Physical Processor ID: 0
[    0.004000] CPU: Processor Core ID: 0
[    0.004000] Last level iTLB entries: 4KB 512, 2MB 7, 4MB 7
[    0.004000] Last level dTLB entries: 4KB 512, 2MB 32, 4MB 32
[    0.004000] tlb_flushall_shift: 6
[    0.024978] cpu 0 spinlock event irq 17
[    0.025015] Performance Events: unsupported p6 CPU model 26 no PMU driver, software events only.
[    0.025381] NMI watchdog: disabled (cpu0): hardware events not enabled
[    0.025797] installing Xen timer for CPU 1
[    0.025823] cpu 1 spinlock event irq 24
[    0.025871] SMP alternatives: switching to SMP code
[    0.047829] Brought up 2 CPUs
[    0.048116] devtmpfs: initialized
[    0.052312] Grant tables using version 2 layout.
[    0.052312] Grant table initialized
[    0.052463] NET: Registered protocol family 16
[    0.052643] PCI: setting up Xen PCI frontend stub
[    0.052643] PCI: pci_cache_line_size set to 64 bytes
[    0.056150] bio: create slab <bio-0> at 0
[    0.056305] ACPI: Interpreter disabled.
[    0.056305] xen/balloon: Initialising balloon driver.
[    0.056305] xen-balloon: Initialising balloon driver.
[    0.060078] vgaarb: loaded
[    0.060530] SCSI subsystem initialized
[    0.060548] libata version 3.00 loaded.
[    0.060548] PCI: System does not support PCI
[    0.060548] PCI: System does not support PCI
[    0.060548] Switching to clocksource xen
[    0.071010] pnp: PnP ACPI: disabled
[    0.075938] NET: Registered protocol family 2
[    0.076230] TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
[    0.076564] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[    0.076725] TCP: Hash tables configured (established 131072 bind 65536)
[    0.076939] TCP: reno registered
[    0.076947] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.076956] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.077090] NET: Registered protocol family 1
[    0.077344] RPC: Registered named UNIX socket transport module.
[    0.077352] RPC: Registered udp transport module.
[    0.077357] RPC: Registered tcp transport module.
[    0.077363] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.077370] PCI: CLS 0 bytes, default 64
[    0.077575] Trying to unpack rootfs image as initramfs...
[    0.089874] Freeing initrd memory: 8780k freed
[    0.091831] platform rtc_cmos: registered platform RTC device (no PNP device found)
[    0.092255] audit: initializing netlink socket (disabled)
[    0.092282] type=2000 audit(1358267462.506:1): initialized
[    0.092672] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.093778] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[    0.094473] msgmni has been set to 1987
[    0.094991] alg: No test for stdrng (krng)
[    0.095053] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.095061] io scheduler noop registered
[    0.095066] io scheduler deadline registered
[    0.095104] io scheduler cfq registered (default)
[    0.095402] Event-channel device installed.
[    0.096341] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.097054] brd: module loaded
[    0.098474] loop: module loaded
[    0.098847] Loading iSCSI transport class v2.0-870.
[    0.099254] bnx2fc: Broadcom NetXtreme II FCoE Driver bnx2fc v1.0.12 (Jun 04, 2012)
[    0.129975] isci: Intel(R) C600 SAS Controller Driver - version 1.1.0
[    0.130061] megaraid cmm: 2.20.2.7 (Release Date: Sun Jul 16 00:01:03 EST 2006)
[    0.130148] megaraid: 2.20.5.1 (Release Date: Thu Nov 16 15:32:35 EST 2006)
[    0.130181] megasas: 06.504.01.00-rc1 Mon. Oct. 1 17:00:00 PDT 2012
[    0.130221] mpt2sas version 14.100.00.00 loaded
[    0.130335] GDT-HA: Storage RAID Controller Driver. Version: 3.05
[    0.130369] Broadcom NetXtreme II iSCSI Driver bnx2i v2.7.2.2 (Apr 25, 2012)
[    0.130405] iscsi: registered transport (bnx2i)
[    0.130773] SCSI Media Changer driver v0.25 
[    0.131016] tun: Universal TUN/TAP device driver, 1.6
[    0.131022] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[    0.131143] cnic: Broadcom NetXtreme II CNIC Driver cnic v2.5.14 (Sep 30, 2012)
[    0.131245] bnx2x: Broadcom NetXtreme II 5771x/578xx 10/20-Gigabit Ethernet Driver bnx2x 1.78.00-0 (2012/09/27)
[    0.131376] Initialising Xen virtual ethernet driver.
[    0.131605] I2O subsystem v1.325
[    0.131613] i2o: max drivers = 8
[    0.131763] Fusion MPT base driver 3.04.20
[    0.131770] Copyright (c) 1999-2008 LSI Corporation
[    0.131786] Fusion MPT SPI Host driver 3.04.20
[    0.131815] Fusion MPT FC Host driver 3.04.20
[    0.131852] Fusion MPT SAS Host driver 3.04.20
[    0.131893] Fusion MPT misc device (ioctl) driver 3.04.20
[    0.131971] mptctl: Registered with Fusion MPT base driver
[    0.131979] mptctl: /dev/mptctl @ (major,minor=10,220)
[    0.132082] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    0.132902] i8042: No controller found
[    0.133088] mousedev: PS/2 mouse device common for all mice
[    0.192892] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    0.193025] ida_remove called for id=0 which is not allocated.
[    0.193037] rtc_cmos: probe of rtc_cmos failed with error -38
[    0.193358] device-mapper: ioctl: 4.23.0-ioctl (2012-07-25) initialised: dm-devel@redhat.com
[    0.193460] pktgen: Packet Generator for packet performance testing. Version: 2.74
[    0.193628] drop_monitor: Initializing network drop monitor service
[    0.193739] TCP: cubic registered
[    0.193746] NET: Registered protocol family 17
[    0.193866] NET: Registered protocol family 33
[    0.193872] Key type rxrpc registered
[    0.193877] Key type rxrpc_s registered
[    0.193901] Key type dns_resolver registered
[    0.193906] openvswitch: Open vSwitch switching datapath
[    0.194401] registered taskstats version 1
[    0.194538] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[    0.194955] Freeing unused kernel memory: 596k freed
[    0.195061] Write protecting the kernel read-only data: 8192k
[    0.198621] Freeing unused kernel memory: 1148k freed
[    0.198936] Freeing unused kernel memory: 112k freed
Loading, please wait...
[    0.243803] udev[76]: starting version 164

If you want I can also post the config of the DomU kernel.

Thanks, Roger.

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