Re: [Qemu-devel] Test report for xen-unstable and qemu-xen

[Kevin O'Connor]

On Tue, Aug 13, 2013 at 03:26:43PM +0200, Fabio Fantoni wrote:
> Il 13/08/2013 13:09, Laszlo Ersek ha scritto:
> >On 08/13/13 12:33, Fabio Fantoni wrote:
> >>Il 13/08/2013 12:04, Laszlo Ersek ha scritto:
> >>>On 08/13/13 11:16, Fabio Fantoni wrote:
> >>>>Il 12/08/2013 17:04, Fabio Fantoni ha scritto:
> >>>>>New issue:
> >>>>>- domU not start with qemu 1.5.1 and more that 2 gb of ram:
> >>>>>    tested on w7 64 bit domU with 4 gb of ram, with built-in qemu 1.3 it
> >>>>>works,
> >>>>>    while with qemu 1.5.1 doesn't (stops at the beginning, spice client
> >>>>>show only the lines of seabios version and machine UUID;
> >>>>>    qemu log show nothing more that 2 gb test), while with 2 gb of ram
> >>>>>works also with qemu 1.5.1
> >>>>>-------------------------
[...]
> I did another test disabling the usb controller: it didn't find any
> bootable disk and tried to boot with pxe. I also tried F12 and it
> reported an hard-disk size of 0 MB.
> Configuration is correct because if I change the ram size to 2 GB
> instead of 4, it starts correctly.
> No additional information from qemu log.
> I tried also seabios 1.7.2.2 and master from git, both with same result.

It's not clear to me if this is a QEMU issue or SeaBIOS issue.  Can
you arrange to run qemu with the following added to the command line:

-chardev stdio,id=seabios -device isa-debugcon,iobase=0x402,chardev=seabios

and post the full log from a successful (2G) boot as well as the
unsuccessful (4G) boot?

-Kevin