[Xen-devel] Re: [Xen-users] boot a existing windows in hvm domain

["Brady Chen" <chenchp@xxxxxxxxx>]

cc to xen-devel,

Hi all,
someone saw this kind of error before?
it's a Trap 6 error when start the windows. Does it mean that some
opcodes in real mode are not be simulated? How can I get the
instruction which is not be simulated?

I tried to fetch8(regs) in function trap of
xen-3.1.0-src/tools/firmware/vmxassist/vm86.c, but it cause more
traps, and the hvm is reset immediately.

thank you in advance

On 8/7/07, Brady Chen <chenchp@xxxxxxxxx> wrote:
> Hi Z24, AL,
> ccing tygrawy@gazeta,pl, for I found he got the same issue.
>
> I tried in ThinkPad T60,
> /dev/sda1 -- windows
> /dev/sda2 -- Linux + Xen 3.1.0
>
> in xen guest, the whole sda is mapped to virtual hda.
> disk = [ 'phy:/dev/sda, hda, w' ]
>
> I could see the grub menu in xen guest, and could boot in to the linux
> (you know, it's re-enter into the linux), but when I select windows
> from grub menu, it will hang after print "chainloader +1"
> the xen dmesg shows:
> (XEN) HVM1: Trap (0x6) while in real mode
> (XEN) HVM1: eax         D00 ecx           0 edx         71F ebx         71E
> (XEN) HVM1: esp       D7384 ebp       D73D0 esi       D7364 edi         D00
> (XEN) HVM1: trapno        6 errno         0
> (XEN) HVM1: eip       D0800 cs           10 eflags    13046
> (XEN) HVM1: uesp      D7474 uss           2
> (XEN) HVM1: ves       D4AB8 vds       D4C1D vfs       D07FE vgs       D7474
> (XEN) HVM1: cr0       50032 cr2           0 cr3           0 cr4         651
> (XEN) HVM1:
> (XEN) HVM1: Halt called from %eip 0xD037
>
> tygrawy:
> I found you have the same issue months ago, have you find out the
> reason? Thank you very much.
>
> http://lists.xensource.com/archives/html/xen-users/2007-07/msg00521.html
>
> On 8/2/07, Brady Chen <chenchp@xxxxxxxxx> wrote:
> > On 8/2/07, Z24 <z24@xxxxxxx> wrote:
> > > On Thu, 2 Aug 2007 17:47:59 +0800, you wrote:
> > >
> > > >thank you all,
> > > >looks like it's possible. it's great!
> > > >
> > > >Z24,
> > > >do you get the hardware issue Archie said, that's my concern too.
> > > >you know, windows may be bluescreen if the hardware changes.
> > >
> > > Before booting the Windows domU I copied the current Windows HW
> > > Profile to a new HW Profile, then when I boot the domU I choose the
> > > new HW profile.
> > > The first time I booted the domU, Windows took some minutes more than
> > > usual to load, I suppose it was setting automatically the hardware
> > > drivers; the next time it booted only a little slower than when I boot
> > > it natively (due to virtualization).
> > >
> > thanks, I will have a try.
> >
> > > >and for your case, i think you could install another grub in the windows 
> > > >disk
> > >
> > > What do you mean?
> > > Xen VM configuration with 'phy:/dev/hda,ioemu:hda,w' only (hda is
> > > Windows disk) and grub-install on /dev/hda without mapping?
> > yup, install grub on /dev/hda, it will not be used when you not using
> > xen (i mean when you reboot your PC, and choose windows from the grub
> > menu). but when you use xen to boot /dev/hda, the grub on /dev/hda
> > could be used to load the windows. Don't know if it really works,
> > don't have a try now.
> > >
> > > --
> > > Z24
> > > http://www.mycomputingart.com/
> > >
> >
>

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