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Re: [Xen-users] Options for >4GB setups

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Gino LV. Ledesma" <gledesma@xxxxxxxxx>
  • Date: Fri, 12 Aug 2005 16:09:24 -0700
  • Delivery-date: Fri, 12 Aug 2005 23:07:52 +0000
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Seems like there's a lot of activity going on with x86_64. :-)

Today I got the latest seed archive to attempt to get a Dell SC1425
(Dual Xeon EM64T) up and running with Xen. Without trying the default
install, I tried building a with a custom kernel config and found out
that compiling in SMP and HyperThreading support causes the boot
process to barf. Rolling back to the default build, I get stuck with
an error pointing to:


BUG_ON(HYPERVISOR_mmu_update(&u, 1, NULL, DOMID_SELF) < 0);

Well, at least it got farther than my last attempt. :-)


On 8/10/05, Mark Williamson <mark.williamson@xxxxxxxxxxxx> wrote:
> > I know that this has been asked to death on the list, and in the past
> > few days I've been trying to see if there were other options for
> > getting a xen host to use more than 4GB of RAM.
> Under Xen 2.0, I'm afraid you're stuck.  xen-unstable's support for >4Gig is
> coming along nicely, though.
> > I've tried xen-unstable x86_64 on Xeon EM64Ts as well as xen-unstable
> > with the initial PAE support but neither got me too far from booting:
> > the former hangs when using the supplied binaries in
> > xen-unstable-x86_64 and the latter a known bug at domain_build.c:327.
> > And I know that the developers (who are really hard at work) have said
> > that xen 3.0 may be coming out really soon now, but was wondering if
> > there were anys suggestions for the impatient ones. ;-)
> Patience, study the teachings of Xen and you will achieve enlightenment.
> Ooops, that's the wrong [ZX]en :-)  Try the latest revision / tomorrow's
> snapshot (Keir checked in a fix today that corrected several known bugs) and
> see if that improves things for you.
> Cheers,
> Mark
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