XEN with xsave=0
================

% /usr/lib/xen-default/bin/pygrub /home/starch/data/xen/domains/squeeze/disk.img
zsh: illegal hardware instruction  /usr/lib/xen-default/bin/pygrub /home/starch/data/xen/domains/squeeze/disk.im

% dmesg |tail -n 1
[  258.367319] pygrub[3062] trap invalid opcode ip:7f7b7ec0ac50 sp:7fffd14db4b8 error:0 in ld-2.13.so[7f7b7ebf7000+1f000]

% xm dmesg
(XEN) Xen version 4.1.1 (Debian 4.1.1-3) (waldi@debian.org) (gcc version 4.6.1 (Debian 4.6.1-16) ) Wed Oct 26 12:44:59 UTC 2011
(XEN) Bootloader: GRUB 1.99-12
(XEN) Command line: placeholder xsave=0
(XEN) Video information:
(XEN)  VGA is text mode 80x25, font 8x16
(XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN)  Found 2 MBR signatures
(XEN)  Found 2 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009d800 (usable)
(XEN)  000000000009d800 - 00000000000a0000 (reserved)
(XEN)  00000000000e0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000cefd6000 (usable)
(XEN)  00000000cefd6000 - 00000000cf029000 (ACPI NVS)
(XEN)  00000000cf029000 - 00000000cf5a5000 (reserved)
(XEN)  00000000cf5a5000 - 00000000cf5b6000 (ACPI NVS)
(XEN)  00000000cf5b6000 - 00000000cf5cd000 (reserved)
(XEN)  00000000cf5cd000 - 00000000cf5cf000 (usable)
(XEN)  00000000cf5cf000 - 00000000cf5d0000 (ACPI NVS)
(XEN)  00000000cf5d0000 - 00000000cf5d8000 (reserved)
(XEN)  00000000cf5d8000 - 00000000cf5e2000 (ACPI NVS)
(XEN)  00000000cf5e2000 - 00000000cf63e000 (reserved)
(XEN)  00000000cf63e000 - 00000000cf681000 (ACPI NVS)
(XEN)  00000000cf681000 - 00000000cf800000 (usable)
(XEN)  00000000fed1c000 - 00000000fed20000 (reserved)
(XEN)  00000000ff000000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 000000022f800000 (usable)
(XEN) ACPI: RSDP 000F0420, 0024 (r2 ALASKA)
(XEN) ACPI: XSDT CF020068, 004C (r1 ALASKA    A M I  1072009 AMI     10013)
(XEN) ACPI: FACP CF0289D8, 00F4 (r4 ALASKA    A M I  1072009 AMI     10013)
(XEN) ACPI: DSDT CF020140, 8891 (r2 ALASKA    A M I        0 INTL 20051117)
(XEN) ACPI: FACS CF5D9F80, 0040
(XEN) ACPI: APIC CF028AD0, 0072 (r3 ALASKA    A M I  1072009 AMI     10013)
(XEN) ACPI: SSDT CF028B48, 0102 (r1 AMICPU     PROC        1 MSFT  3000001)
(XEN) ACPI: MCFG CF028C50, 003C (r1 ALASKA    A M I  1072009 MSFT       97)
(XEN) ACPI: HPET CF028C90, 0038 (r1 ALASKA    A M I  1072009 AMI.        4)
(XEN) System RAM: 8168MB (8365008kB)
(XEN) Domain heap initialised
(XEN) ACPI: 32/64X FACS address mismatch in FADT - cf5d9f80/0000000000000000, using 32
(XEN) Processor #0 6:10 APIC version 21
(XEN) Processor #2 6:10 APIC version 21
(XEN) Processor #4 6:10 APIC version 21
(XEN) Processor #6 6:10 APIC version 21
(XEN) IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
(XEN) Table is not found!
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 3310.870 MHz processor.
(XEN) Initing memory sharing.
(XEN) I/O virtualisation disabled
(XEN) Enabled directed EOI with ioapic_ack_old on!
(XEN) ENABLING IO-APIC IRQs
(XEN)  -> Using old ACK method
(XEN) Platform timer is 14.318MHz HPET
(XEN) Allocated console ring of 16 KiB.
(XEN) VMX: Supported advanced features:
(XEN)  - APIC MMIO access virtualisation
(XEN)  - APIC TPR shadow
(XEN)  - Extended Page Tables (EPT)
(XEN)  - Virtual-Processor Identifiers (VPID)
(XEN)  - Virtual NMI
(XEN)  - MSR direct-access bitmap
(XEN)  - Unrestricted Guest
(XEN) EPT supports 2MB super page.
(XEN) HVM: ASIDs enabled.
(XEN) HVM: VMX enabled
(XEN) HVM: Hardware Assisted Paging detected.
(XEN) Brought up 4 CPUs
(XEN) *** LOADING DOMAIN 0 ***
(XEN)  Xen  kernel: 64-bit, lsb, compat32
(XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x192d000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000220000000->0000000224000000 (2006657 pages to be allocated)
(XEN)  Init. ramdisk: 000000022cc9a000->000000022f7ff800
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: ffffffff81000000->ffffffff8192d000
(XEN)  Init. ramdisk: ffffffff8192d000->ffffffff84492800
(XEN)  Phys-Mach map: ffffffff84493000->ffffffff85417f38
(XEN)  Start info:    ffffffff85418000->ffffffff854184b4
(XEN)  Page tables:   ffffffff85419000->ffffffff85448000
(XEN)  Boot stack:    ffffffff85448000->ffffffff85449000
(XEN)  TOTAL:         ffffffff80000000->ffffffff85800000
(XEN)  ENTRY ADDRESS: ffffffff8169f200
(XEN) Dom0 has maximum 4 VCPUs
(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) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to Xen)
(XEN) Freed 224kB init memory.

% dmesg
