[Xen-bugs] [Bug 461] New: Kernel not booting with > 4GB RAM

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=461

           Summary: Kernel not booting with > 4GB RAM
           Product: Xen
           Version: 3.0-testing
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Hardware Support
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: ricardoz@xxxxxxxxxx
                CC: hohnbaum@xxxxxxxxxx,pl@xxxxxxxxxx


changeset:   8395:1283d309a603
tag:         tip
user:        kaf24@xxxxxxxxxxxxxxxxxxxx
date:        Sun Dec 18 13:29:43 2005 +0100
summary:     Avoid div-by-zero crash if vmx guest specifies bogus timer

Distribution: FC4
HW: VT-enabled, SMP, 1 HD, 2Gbit adaptors, 8GB RAM
ARCH: x86_64
Kernel config:  default
Grub entry:

title Xen 3.0 unstable / XenLinux 2.6
        root (hd0,0)
        kernel /boot/xen-3.0.gz dom0_mem=1048576 com1=115200,8n1 noapic acpi=off
       module /boot/vmlinuz-2.6-xen0 root=/dev/sda1 console=ttyS0,115200
console=tty0 acpi=off
        module /boot/initrd-2.6.12.6-xen0.img

Problem Details:

When trying to boot with the 8GB of Ram that is installed in the VT-enabled
system, Xen hangs during the boot process and the serial console does not
specify anything that points to the memory. I took 4GB of memory as a suggestion
from Ralph Blach. After taking that memory out, Xen booted without a problem.
I'll include the serial console output after I install the memory again.

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