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Re: [Xen-devel] Nested virtualization instabilities

Hi Mr. Yang.
I did attempt to use your suggested configuration with the XenServer VM, but to no avail. The L2 VM keeps on crushing. I defined it now to leave a dump file when crushing, and if you desire so, I will find some method of uploading it for your viewing pleasure. As I am not a programmer, but an integrator, my abilities in this direction are limited at best.
The L3 VM type is 'generic VM', because I wanted to enforce the system to use HVM emulation.

I have just applied the patch you supplied me to my 'staging' git checkout, and just finished compiling it. I will soon apply the newly created RPMs on my test (and hopefully - to be production soon) server, and will check VMware.

Thanks for the input. I will try and then respond with results.

Etzion


On Wed, Dec 18, 2013 at 3:33 AM, Zhang, Yang Z <yang.z.zhang@xxxxxxxxx> wrote:
Etzion Bar-Noy wrote on 2013-12-16:
> Hi.
>

Hi Etzion Bar-Noy

It's glad to know someone is using Nested Xen and report bugs to us. Also, if there are more nested bugs you found, please CC me too.

>
> I am using the unstable build-from-source of Xen community. It reports
> as 4.4, and was pulled from Git few days ago. The problem I will
> describe below appears on version 4.3.1, compiled from source as well.
> In both cases - I used spec file to create my own RPMs, because it's the right method of doing it.
>
>
> Problem: When VM running under HVM which is a hypervisor (XenServer
> 6.2 or VMware ESXi5.5) attempts to start a (HVM) virtual machine, the
> following happens, 100% reproducible on this server.
>
> XenServer: domain crash. XenServer restarts itself. It doesn't happen
> for PV on XenServer VM
>
> VMware: An "unknown failure", which leads me to think that the nested
> virtualization properties are not forwarded correctly to DomU

To using nested, you need to add the set bit 31 of cupid.1.ecx to 0, add the following to your config file:
cpuid = ['0x1:ecx=0xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx']

For VMware ESX server, the attached patch is missing in current Xen which will caused the guest boot up fail. Also, I know some windows guests will boot fail on ESX.
I never tried XenServer. But latest Xen on Xen is working well. So can you try the upsteam Xen to see whether it fails too?

BTW, which L2 VM boot fail?

>
>
> Just to clarify:
>
> Physical hardware: host
>
> Nested hypervisor: level 1 virtualization: XenServer or VMware ESXi
>
> Nested VM: level 2 virtualization: some generic VM inside XenServer or
> ESXi (level 1)
>
>
> This is the configuration used for XS:
> name = "XenServer"
> uuid = "a0b8c668-afaf-887a-1f4b-856dac4c8401"
> maxmem = 4096
> memory = 4096
> vcpus = 2
> builder = "hvm"
> boot = "c"
> pae = 1
> acpi = 1
> apic = 1
> hap = 0
> viridian = 0
> rtc_timeoffset = 0
> localtime = 0
> > > > > > > sdl = 0
> vnc = 1
> vncunused = 1
> keymap = "en-us"
> disk = [ "tap2:aio:/dev/share/VMS/xenserver01.lun,hda,w",
> ",hdc:cdrom,r" ] vif = [
> "mac=00:16:3e:14:0d:72,bridge=lan,script=vif-bridge,model=e1000" ] parallel = "none"
> serial = "pty"
> nestedhvm = 1
>
> nx=1
>
>
> # A note - this problem appears with and without the 'nx' flag.
>
> A snippet from strace to qemu process:
>
> poll([{fd=30, events=POLLIN|POLLERR|POLLHUP}, {fd=18,
> events=POLLIN|POLLERR|POLLHUP}, {fd=29,
> events=POLLIN|POLLERR|POLLHUP}, {fd=21,
> events=POLLIN|POLLERR|POLLHUP}, {fd=15,
> events=POLLIN|POLLERR|POLLHUP}, {fd=5, events=
> POLLIN|POLLERR|POLLHUP}, {fd=7, events=POLLIN}, {fd=11, POLLIN|POLLERR|events=POLLIN}, {fd=28, events=POLLIN}, {fd=6, POLLIN|POLLERR|events=POLLIN}], 10, 307) = ?
> ERESTART_RESTARTBLOCK (To POLLIN|POLLERR|be restarted) --- SIGHUP
> (Hangup) @ 0 (0) --- write(6, "\1\0\0\0\0\0\0\0", 8)         = 8
> rt_sigreturn(0x2)                       = -1 EINTR (Interrupted system
> call) gettimeofday({1386761621, 705266}, NULL) = 0
> clock_gettime(CLOCK_MONOTONIC, {1840, 693236049}) = 0
> clock_gettime(CLOCK_MONOTONIC, {1840, 693333096}) = 0
> gettimeofday({1386761621, 705546}, NULL) = 0 write(2, "qemu: terminating
> on signal 1", 29) = 29 write(2, " from pid 6933\n", 15)        = 15
>
>
> From the xl log for this domain:
> Waiting for domain XenServer (domid 5) to die [pid 6933] Domain 5 has
> shut down, reason code 3 0x3 Action for shutdown reason code 3 is
> restart Domain
> 5 needs to be cleaned up: destroying the domain Done. Rebooting now
> Waiting for domain XenServer (domid 6) to die [pid 6933]
>
>
> From 'xl dmesg' (XEN) <vm_launch_fail> error code 7 (XEN)
> domain_crash_sync called from vmcs.c:1293 (XEN) Domain 8 (vcpu#0)
> crashed on cpu#4: (XEN) ----[ Xen-4.4-unstable  x86_64  debug=y  Not
> tainted ]---- (XEN) CPU:    4 (XEN) RIP:    0000:[<0000000000000000>]
> (XEN) RFLAGS: 0000000000000002   CONTEXT: hvm guest (XEN) rax:
> 0000000000000000   rbx: ffff830824f98000   rcx: ffff830824f9ff80 (XEN)
> rdx: ffff82d0801d0cf9   rsi: 0000000000000000   rdi: ffff82d0801de7fc
> (XEN) rbp: ffff82d080105ab1   rsp: 0000000000000000   r8:
> 0000000000000004 (XEN) r9:  ffff82d080105b20   r10: ffff830824f9ff70
> r11: 0000000000000000 (XEN) r12: ffff830824f9ff50   r13:
> ffff830654f9e000   r14: ffff830824f9ff30 (XEN) r15: ffff82d080187e43
> cr0: 0000000000000039   cr4: 0000000000002050 (XEN) cr3:
> 00000000feffa000   cr2: 0000000000000000 (XEN) ds: 0000   es: 0000   fs:
> 0000   gs: 0000   ss: 0000   cs: 0000 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (d9) HVM Loader (d9) Detected
> Xen v4.4-unstable (d9) Xenbus rings @0xfeffc000, event channel 4 (d9)
> System requested SeaBIOS (d9) CPU speed is 3400 MHz (d9) Relocating
> guest memory for lowmem MMIO space disabled (XEN) irq.c:270: Dom9 PCI
> link 0 changed 0 -> 5 (d9) PCI-ISA link 0 routed to IRQ5 (XEN)
> irq.c:270: Dom9 PCI link 1 changed 0 -> 10 (d9) PCI-ISA link 1 routed
> to IRQ10 (XEN)
> irq.c:270: Dom9 PCI link 2 changed 0 -> 11 (d9) PCI-ISA link 2 routed
> to
> IRQ11 (XEN) irq.c:270: Dom9 PCI link 3 changed 0 -> 5 (d9) PCI-ISA
> link
> 3 routed to IRQ5 (d9) pci dev 01:3 INTA->IRQ10 (d9) pci dev 02:0
> INTA->IRQ11 (d9) pci dev 04:0 INTA->IRQ5 (d9) RAM in high memory;
> setting high_mem resource base to 10f800000 (d9) pci dev 03:0 bar 10
> size 002000000: 0f0000008 (d9) pci dev 02:0 bar 14 size 001000000:
> 0f2000008 (d9) pci dev 04:0 bar 30 size 000040000: 0f3000000 (d9) pci
> dev 04:0 bar 10 size 000020000: 0f3040000 (d9) pci dev 03:0 bar 30
> size
> 000010000: 0f3060000 (d9) pci dev 03:0 bar 14 size 000001000:
> 0f3070000
> (d9) pci dev 02:0 bar 10 size 000000100: 00000c001 (d9) pci dev 04:0
> bar
> 14 size 000000040: 00000c101 (d9) pci dev 01:1 bar 20 size 000000010:
> 00000c141 (d9) Multiprocessor initialisation: (d9)  - CPU0 ... 46-bit
> phys ... fixed MTRRs ... var MTRRs [2/8] ... done. (d9)  - CPU1 ...
> 46-bit phys ... fixed MTRRs ... var MTRRs [2/8] ... done. (d9) Testing
> HVM environment: (d9)  - REP INSB across page boundaries ... passed
> (d9)
>  - GS base MSRs and SWAPGS ... passed (d9) Passed 2 of 2 tests (d9)
> Writing SMBIOS tables ... (d9) Loading SeaBIOS ... (d9) Creating MP
> tables ... (d9) Loading ACPI ... (d9) vm86 TSS at fc00a080 (d9) BIOS
> map: (d9)  10000-100d3: Scratch space (d9)  e0000-fffff: Main BIOS
> (d9)
> E820 table: (d9)  [00]: 00000000:00000000 - 00000000:000a0000: RAM
> (d9)
> HOLE: 00000000:000a0000 - 00000000:000e0000 (d9)  [01]:
> 00000000:000e0000 - 00000000:00100000: RESERVED (d9)  [02]:
> 00000000:00100000 - 00000000:f0000000: RAM (d9)  HOLE:
> 00000000:f0000000
> - 00000000:fc000000 (d9)  [03]: 00000000:fc000000 - 00000001:00000000:
> RESERVED (d9)  [04]: 00000001:00000000 - 00000001:0f800000: RAM (d9)
> Invoking SeaBIOS ... (d9) SeaBIOS (version
> rel-1.7.3.1-0-g7d9cbe6-20131211_100730-compilevm) (d9) (d9) Found Xen
> hypervisor signature at 40000000 (d9) xen: copy e820... (d9)
> Relocating init from 0x000e2e88 to 0xeffe1d80 (size 57784) (d9) CPU
> Mhz=3400 (d9) Found 7 PCI devices (max PCI bus is 00) (d9) Allocated
> Xen hypercall page at effff000 (d9) Detected Xen v4.4-unstable (d9)
> xen: copy BIOS tables... (d9) Copying SMBIOS entry point from
> 0x00010010 to 0x000f1020
> (d9) Copying MPTABLE from 0xfc001170/fc001180 to 0x000f0f20 (d9)
> Copying PIR from 0x00010030 to 0x000f0ea0 (d9) Copying ACPI RSDP from
> 0x000100b0 to 0x000f0e70 (d9) Using pmtimer, ioport 0xb008, freq 3579
> kHz (d9) Scan for VGA option rom (d9) WARNING! Found unaligned PCI rom
> (vd=1013:00b8)
> (d9) Running option rom at c000:0003 (XEN) stdvga.c:147:d9 entering
> stdvga and caching modes (d9) Turning on vga text mode console (d9)
> SeaBIOS (version rel-1.7.3.1-0-g7d9cbe6-20131211_100730-compilevm)
> (d9) Machine UUID a0b8c668-afaf-887a-1f4b-856dac4c8401 (d9) Found 0
> lpt ports
> (d9) Found 1 serial ports (d9) ATA controller 1 at 1f0/3f4/c140 (irq
> 14 dev 9) (d9) ATA controller 2 at 170/374/c148 (irq 15 dev 9) (d9) ata0-0:
> QEMU HARDDISK ATA-7 Hard-Disk (14336 MiBytes) (d9) Searching bootorder
> for: /pci@i0cf8/*@1,1/drive@0/disk@0 (d9) DVD/CD [ata1-0: QEMU DVD-ROM
> ATAPI-4 DVD/CD] (d9) Searching bootorder for:
> /pci@i0cf8/*@1,1/drive@1/disk@0 (d9) PS2 keyboard initialized (d9) All
> threads complete. (d9) Scan for option roms (d9) Running option rom at
> c900:0003 (d9) pmm call arg1=1 (d9) pmm call arg1=0 (d9) pmm call
> arg1=1
> (d9) pmm call arg1=0 (d9) Searching bootorder for: /pci@i0cf8/*@4 (d9)
> (d9) Press F12 for boot menu. (d9) (d9) Searching bootorder for: HALT
> (d9) drive 0x000f0e20: PCHS=16383/16/63 translation=lba
> LCHS=1024/255/63
> s=29360128 (d9) Space available for UMB: ca000-ee800, f0000-f0dc0 (d9)
> Returned 61440 bytes of ZoneHigh (d9) e820 map has 7 items: (d9)   0:
> 0000000000000000 - 000000000009fc00 = 1 RAM (d9)   1: 000000000009fc00 -
> 00000000000a0000 = 2 RESERVED (d9)   2: 00000000000f0000 -
> 0000000000100000 = 2 RESERVED (d9)   3: 0000000000100000 -
> 00000000effff000 = 1 RAM (d9)   4: 00000000effff000 - 00000000f0000000 =
> 2 RESERVED (d9)   5: 00000000fc000000 - 0000000100000000 = 2 RESERVED
> (d9)   6: 0000000100000000 - 000000010f800000 = 1 RAM (d9) enter
> handle_19: (d9)   NULL (d9) Booting from Hard Disk... (d9) Booting from
> 0000:7c00 [root@monster ~]# xl dmesg (XEN) <vm_launch_fail> error code
> 7
> (XEN) domain_crash_sync called from vmcs.c:1293 (XEN) Domain 8
> (vcpu#0) crashed on cpu#4: (XEN) ----[ Xen-4.4-unstable  x86_64  debug=y  Not
> tainted ]---- (XEN) CPU:    4 (XEN) RIP:    0000:[<0000000000000000>]
> (XEN) RFLAGS: 0000000000000002   CONTEXT: hvm guest (XEN) rax:
> 0000000000000000   rbx: ffff830824f98000   rcx: ffff830824f9ff80 (XEN)
> rdx: ffff82d0801d0cf9   rsi: 0000000000000000   rdi: ffff82d0801de7fc
> (XEN) rbp: ffff82d080105ab1   rsp: 0000000000000000   r8:
> 0000000000000004 (XEN) r9:  ffff82d080105b20   r10: ffff830824f9ff70
> r11: 0000000000000000 (XEN) r12: ffff830824f9ff50   r13:
> ffff830654f9e000   r14: ffff830824f9ff30 (XEN) r15: ffff82d080187e43
> cr0: 0000000000000039   cr4: 0000000000002050 (XEN) cr3:
> 00000000feffa000   cr2: 0000000000000000 (XEN) ds: 0000   es: 0000   fs:
> 0000   gs: 0000   ss: 0000   cs: 0000 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (XEN) event_channel.c:270:d0
> EVTCHNOP failure: domain 9, error -22 (d9) HVM Loader (d9) Detected
> Xen v4.4-unstable (d9) Xenbus rings @0xfeffc000, event channel 4 (d9)
> System requested SeaBIOS (d9) CPU speed is 3400 MHz (d9) Relocating
> guest memory for lowmem MMIO space disabled (XEN) irq.c:270: Dom9 PCI
> link 0 changed 0 -> 5 (d9) PCI-ISA link 0 routed to IRQ5 (XEN)
> irq.c:270: Dom9 PCI link 1 changed 0 -> 10 (d9) PCI-ISA link 1 routed
> to IRQ10 (XEN)
> irq.c:270: Dom9 PCI link 2 changed 0 -> 11 (d9) PCI-ISA link 2 routed
> to
> IRQ11 (XEN) irq.c:270: Dom9 PCI link 3 changed 0 -> 5 (d9) PCI-ISA
> link
> 3 routed to IRQ5 (d9) pci dev 01:3 INTA->IRQ10 (d9) pci dev 02:0
> INTA->IRQ11 (d9) pci dev 04:0 INTA->IRQ5 (d9) RAM in high memory;
> setting high_mem resource base to 10f800000 (d9) pci dev 03:0 bar 10
> size 002000000: 0f0000008 (d9) pci dev 02:0 bar 14 size 001000000:
> 0f2000008 (d9) pci dev 04:0 bar 30 size 000040000: 0f3000000 (d9) pci
> dev 04:0 bar 10 size 000020000: 0f3040000 (d9) pci dev 03:0 bar 30
> size
> 000010000: 0f3060000 (d9) pci dev 03:0 bar 14 size 000001000:
> 0f3070000
> (d9) pci dev 02:0 bar 10 size 000000100: 00000c001 (d9) pci dev 04:0
> bar
> 14 size 000000040: 00000c101 (d9) pci dev 01:1 bar 20 size 000000010:
> 00000c141 (d9) Multiprocessor initialisation: (d9)  - CPU0 ... 46-bit
> phys ... fixed MTRRs ... var MTRRs [2/8] ... done. (d9)  - CPU1 ...
> 46-bit phys ... fixed MTRRs ... var MTRRs [2/8] ... done. (d9) Testing
> HVM environment: (d9)  - REP INSB across page boundaries ... passed
> (d9)
>  - GS base MSRs and SWAPGS ... passed (d9) Passed 2 of 2 tests (d9)
> Writing SMBIOS tables ... (d9) Loading SeaBIOS ... (d9) Creating MP
> tables ... (d9) Loading ACPI ... (d9) vm86 TSS at fc00a080 (d9) BIOS
> map: (d9)  10000-100d3: Scratch space (d9)  e0000-fffff: Main BIOS
> (d9)
> E820 table: (d9)  [00]: 00000000:00000000 - 00000000:000a0000: RAM
> (d9)
> HOLE: 00000000:000a0000 - 00000000:000e0000 (d9)  [01]:
> 00000000:000e0000 - 00000000:00100000: RESERVED (d9)  [02]:
> 00000000:00100000 - 00000000:f0000000: RAM (d9)  HOLE:
> 00000000:f0000000
> - 00000000:fc000000 (d9)  [03]: 00000000:fc000000 - 00000001:00000000:
> RESERVED (d9)  [04]: 00000001:00000000 - 00000001:0f800000: RAM (d9)
> Invoking SeaBIOS ... (d9) SeaBIOS (version
> rel-1.7.3.1-0-g7d9cbe6-20131211_100730-compilevm) (d9) (d9) Found Xen
> hypervisor signature at 40000000 (d9) xen: copy e820... (d9)
> Relocating init from 0x000e2e88 to 0xeffe1d80 (size 57784) (d9) CPU
> Mhz=3400 (d9) Found 7 PCI devices (max PCI bus is 00) (d9) Allocated
> Xen hypercall page at effff000 (d9) Detected Xen v4.4-unstable (d9)
> xen: copy BIOS tables... (d9) Copying SMBIOS entry point from
> 0x00010010 to 0x000f1020
> (d9) Copying MPTABLE from 0xfc001170/fc001180 to 0x000f0f20 (d9)
> Copying PIR from 0x00010030 to 0x000f0ea0 (d9) Copying ACPI RSDP from
> 0x000100b0 to 0x000f0e70 (d9) Using pmtimer, ioport 0xb008, freq 3579
> kHz (d9) Scan for VGA option rom (d9) WARNING! Found unaligned PCI rom
> (vd=1013:00b8)
> (d9) Running option rom at c000:0003 (XEN) stdvga.c:147:d9 entering
> stdvga and caching modes (d9) Turning on vga text mode console (d9)
> SeaBIOS (version rel-1.7.3.1-0-g7d9cbe6-20131211_100730-compilevm)
> (d9) Machine UUID a0b8c668-afaf-887a-1f4b-856dac4c8401 (d9) Found 0
> lpt ports
> (d9) Found 1 serial ports (d9) ATA controller 1 at 1f0/3f4/c140 (irq
> 14 dev 9) (d9) ATA controller 2 at 170/374/c148 (irq 15 dev 9) (d9) ata0-0:
> QEMU HARDDISK ATA-7 Hard-Disk (14336 MiBytes) (d9) Searching bootorder
> for: /pci@i0cf8/*@1,1/drive@0/disk@0 (d9) DVD/CD [ata1-0: QEMU DVD-ROM
> ATAPI-4 DVD/CD] (d9) Searching bootorder for:
> /pci@i0cf8/*@1,1/drive@1/disk@0 (d9) PS2 keyboard initialized (d9) All
> threads complete. (d9) Scan for option roms (d9) Running option rom at
> c900:0003 (d9) pmm call arg1=1 (d9) pmm call arg1=0 (d9) pmm call
> arg1=1
> (d9) pmm call arg1=0 (d9) Searching bootorder for: /pci@i0cf8/*@4 (d9)
> (d9) Press F12 for boot menu. (d9) (d9) Searching bootorder for: HALT
> (d9) drive 0x000f0e20: PCHS=16383/16/63 translation=lba
> LCHS=1024/255/63
> s=29360128 (d9) Space available for UMB: ca000-ee800, f0000-f0dc0 (d9)
> Returned 61440 bytes of ZoneHigh (d9) e820 map has 7 items: (d9)   0:
> 0000000000000000 - 000000000009fc00 = 1 RAM (d9)   1: 000000000009fc00 -
> 00000000000a0000 = 2 RESERVED (d9)   2: 00000000000f0000 -
> 0000000000100000 = 2 RESERVED (d9)   3: 0000000000100000 -
> 00000000effff000 = 1 RAM (d9)   4: 00000000effff000 - 00000000f0000000 =
> 2 RESERVED (d9)   5: 00000000fc000000 - 0000000100000000 = 2 RESERVED
> (d9)   6: 0000000100000000 - 000000010f800000 = 1 RAM (d9) enter
> handle_19: (d9)   NULL (d9) Booting from Hard Disk... (d9) Booting from
> 0000:7c00
>
>
> System description:
>
> 1. Centos 6.4 x86_64, latest updates
>
> 2. Xen4centos packages - current kernel is
> 3.10.23-11.el6.centos.alt.x86_64
>
> 3. System with 32GB RAM
>
> 4. Virtual disks are ZFS volumes (aka - block devices). Same problem
> appeared when on local ext3 disks
>
> 5. Using OpenVSwitch version 2.0, compiled to RPM, again.
>
> 6. Intel CPU:
> processor    : 0
> vendor_id    : GenuineIntel
> cpu family    : 6
> model        : 62
> model name    : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
> stepping    : 4
> microcode    : 0x416
> cpu MHz        : 3400.158
> cache size    : 12288 KB
> physical id    : 0
> siblings    : 12
> core id        : 0
> cpu cores    : 6
> apicid        : 0
> initial apicid    : 0
> fpu        : yes
> fpu_exception    : yes
> cpuid level    : 13
> wp        : yes
> flags        : fpu de tsc msr pae mce cx8 apic sep mca cmov pat clflush acpi
> mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good nopl
> nonstop_tsc eagerfpu pni pclmulqdq monitor est ssse3 cx16 sse4_1
> sse4_2 popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor
> lahf_lm ida arat epb xsaveopt pln pts dtherm fsgsbase erms
> bogomips    : 6800.31
> clflush size    : 64
> cache_alignment    : 64
> address sizes    : 46 bits physical, 48 bits virtual
> power management:
>
>
> It was suggested by Mr. Ian Campbell to CC both Mr. Jun Nakajima and Mr.
> Eddie Dong, so, my apologies if this action is improper.
>
>
> Any tip or advice would be great. Any request for further info would
> be also great!
>
> Thanks!
>
> Etzion Bar-Noy


Best regards,
Yang


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