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Re: [Xen-users] Xen 3.1 (pae-mode) causing domU's to crash if RAM above

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen 3.1 (pae-mode) causing domU's to crash if RAM above about 500-800MB is used
From: Ralph Passgang <ralph@xxxxxxxxxxxxx>
Date: Tue, 7 Aug 2007 19:22:19 +0200
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Am Dienstag, 7. August 2007 12:53:33 schrieb Philippe Vanhaesendonck:
> Ralph Passgang said:
> > Am Donnerstag, 2. August 2007 17:55:46 schrieb Ralph Passgang:
> >> Am Donnerstag, 2. August 2007 16:25:02 schrieb Philippe Vanhaesendonck:
> >> > Hi Ralph,
> >> >
> >> > If you look in the archives, I have reported exactly the same problem
> >>
> >> a
> >>
> >> > week or two ago...
> >> > (http://lists.xensource.com/archives/html/xen-users/2007-07/msg00551.h
> >> >tml for reference)
> >>
> >> Yep, sounds like the very same problem.
> >
> > I downgraded my server from 3.1 to 3.0.3 and now it works without any
> > problem.
> >
> > So this problem affects the following xen versions (in combination with
> > 3ware
> > sata controller and 32bit pae mode):
> >
> > Xen = 3.0.0 and Xen >= 3.1, everything in between (3.0.1 - 3.0.4) seems
> > to be
> > fine.
>
> Since Xen 3.1 is doing 32-on-64, I took another approach: I just grabbed
> the 64 bits hypervisor from the x86_64 tarball, leaving all the rest 32
> bits PAE (x86_32p) -- that is: Dom0 & tools are left untouched.
> I was able to started all my DomUs (32 bits PAE PVMs and 32 bits HVMs)
> without any problems.
>
> So running the 64 bits hypervisor seems to do the trick as well...

Thanks for sharing your experience. Very interessting...

I still hope some real insiders can fix this, but this seems to be a "useable" 
solution too.

many regards,
 Ralph

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