Re: [Qemu-devel] git bisect results: ec757c67c40a56492001487e69272f62144fd124 breaks windows boot in qemu-kvm

[Erik Rull <erik.rull@rdsoftware.de>]

On February 2, 2012 at 2:21 PM Jan Kiszka <jan.kiszka@siemens.com> wrote:

> On 2012-02-02 14:18, Erik Rull wrote:
> >
> > On February 1, 2012 at 11:05 PM Erik Rull <erik.rull@rdsoftware.de>
wrote:
> >
> >> Jan Kiszka wrote:
> >>> On 2012-02-01 13:52, Erik Rull wrote:
> >>>>   Hi all,
> >>>>
> >>>> first of all I'm a bit confused:
> >>>>
> >>>> What is the difference between qemu with command line option
> > --enable-kvm
> >>>> and qemu-kvm?
> >>>> It seems to be a difference in code so far, from the performance
point
> > of
> >>>> view it seems to be the same...
> >>>>
> >>>> Now my issue that lead me to a git bisect on qemu-kvm:
> >>>> The following commit / merge breaks my windows guest boot sequence
and
> >>>> causes resets infinitely:
> >>>
> >>> Cannot confirm yet, but I have no ACPI-free Windows installation at
> >>> hand. Where does it reset, after the BIOS?
> >>>
> >>>> ec757c67c40a56492001487e69272f62144fd124 Merge branch
'upstream-merge'
> > into
> >>>> next
> >>>> Thu, 5 Jan 2012 11:00:07 +0000 (13:00 +0200)    Avi
> > Kivity<avi@redhat.com>
> >>>>
> >>>>
> >>>> Interesting: qemu with --enable-kvm master and the same command line
> >>>> options as qemu-kvm runs perfect.
> >>>> My command line options are:
> >>>> qemu-system-x86_64 -serial /dev/ttyS2 -readconfig
> > /etc/ich9-ehci-uhci.cfg
> >>>> -device usb-host,bus=ehci.0 -device usb-tablet -drive
> >>>> file=/dev/sda2,cache=off -m 1024 -net nic,macaddr=$MACADDR -net
> >>>> tap,script=/etc/qemu-ifup -no-acpi -monitor stdio -L
> > /usr/X11R6/share/qemu
> >>>> -boot c -localtime
> >>>
> >>> Is the BIOS at /usr/X11R6/share/qemu in sync with the qemu version
you
> >>> try? Does leaving out options change the picture?
> >>>
> >>> Jan
> >>>
> >>
> >> It happens directly after the windows boot progress bar is completed
(I
> >> boot without logo)
> >>
> >> With the -no-kvm-irqchip it seems to be fine...
> >>
> >> Best regards,
> >>
> >> Erik
> >
> >
> > Hi Jan,
> >
> > I tested with an ACPI-enabled windows.
> > Results:
> > -no-acpi: Continuous reboots like the no-acpi-windows-version
> > without -no-acpi: boots!
> >
> > So I tested the no-acpi-windows-version without -no-acpi option - still
> > rebooting
> > And without -no-acpi and -no-kvm-irqchip => works again
>
> Interesting. Need to install such a version, I guess.
>
> What about no-acpi-windows and upstream qemu with kvm and -machine
> kernel_irqchip=on?
>
> Jan

Boots with and without -no-acpi

Best regards,

Erik

P.S. Too many options for me :-)