On Thursday, April 16, 2015 06:38:08 PM symack wrote:
> Hello Everyone,
> 
> Sorry for the delayed response. Flased the bios to the latest version 1.1.7
> dated 2007.
> Bellow is xen kernel built features:
> 
> CONFIG_XEN=y
> CONFIG_XEN_DOM0=y
> CONFIG_XEN_PVHVM=y
> CONFIG_XEN_MAX_DOMAIN_MEMORY=500
> CONFIG_XEN_SAVE_RESTORE=y
> # CONFIG_XEN_DEBUG_FS is not set
> # CONFIG_XEN_PVH is not set
> CONFIG_PCI_XEN=y
> CONFIG_XEN_PCIDEV_FRONTEND=y
> CONFIG_XEN_BLKDEV_FRONTEND=y
> CONFIG_XEN_BLKDEV_BACKEND=y
> CONFIG_XEN_NETDEV_FRONTEND=y
> CONFIG_XEN_NETDEV_BACKEND=y
> CONFIG_INPUT_XEN_KBDDEV_FRONTEND=y
> CONFIG_HVC_XEN=y
> CONFIG_HVC_XEN_FRONTEND=y
> # CONFIG_XEN_WDT is not set
> CONFIG_XEN_FBDEV_FRONTEND=y
> # Xen driver support
> CONFIG_XEN_BALLOON=y
> CONFIG_XEN_SCRUB_PAGES=y
> CONFIG_XEN_DEV_EVTCHN=y
> CONFIG_XEN_BACKEND=y
> CONFIG_XENFS=y
> CONFIG_XEN_COMPAT_XENFS=y
> CONFIG_XEN_SYS_HYPERVISOR=y
> CONFIG_XEN_XENBUS_FRONTEND=y
> CONFIG_XEN_GNTDEV=y
> CONFIG_XEN_GRANT_DEV_ALLOC=y
> CONFIG_SWIOTLB_XEN=y
> CONFIG_XEN_PCIDEV_BACKEND=y
> CONFIG_XEN_PRIVCMD=y
> CONFIG_XEN_ACPI_PROCESSOR=y
> # CONFIG_XEN_MCE_LOG is not set
> CONFIG_XEN_HAVE_PVMMU=y

Looks ok.

> The machine is still rebooting when booting in the Xen built kernel. I know
> these machines have a thing
> called VRM (Voltage Regulator Module). This module is needed for dual cpu
> configurations. The machine
> has only on CPU and so no VRM. I read somewhere there was a issue with VRM
> equipped machine.

Hmm.... can't help you with this.
I only have one machine with 2 CPU-sockets and both are filled with a real CPU.

But, have a read through:
http://lists.xenproject.org/archives/html/xen-devel/2005-12/msg00710.html

Maybe the VRM you have is dodgy, or maybe you need to disable APIC like the 
person in the above email.

> Your help is greatly appreciate as I am stumped over this.
> 
> Nick.
> ​

Which bootloader do you use?
Please provide the boot-line/command-line options you use for Xen and the 
kernel.

My grub.conf looks like:
********
title Xen + Gentoo Linux 3.16.5 - Xen auto-starting

root (hd0,1)

kernel /xen.gz dom0_mem=4GB,max:4G console=vga dom0_max_vcpus=1 dom0_vcpus_pin

module /kernel-3.16.5-gentoo dolvm root=/dev/vg_artemis_system/artemis_root 
rootfstype=ext4 softlevel=xen

module /initramfs-genkernel-x86_64-3.16.5-gentoo
*******

ignore the "softlevel=xen" part.
I have a xen-bootlevel with loading of all Xen domains (VMs) enabled.

--
Joost

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