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Re: [Xen-devel] Xen 4.2.0 won't boot with FC17 dom0 on Dell Optiplex 790, boots fine with 4.1.3



On Fri, Aug 31, 2012 at 12:05:24PM +0100, Jan Beulich wrote:
> >>> On 30.08.12 at 19:04, Dan Magenheimer <dan.magenheimer@xxxxxxxxxx> wrote:
> >>  From: bing [mailto:Libing.Chen@xxxxxxxxxx]
> >> Sent: Thursday, August 30, 2012 12:16 AM
> >> To: xen-devel@xxxxxxxxxxxxx 
> >> Subject: Re: [Xen-devel] Xen 4.2.0 won't boot with FC17 dom0 on Dell 
> >> Optiplex 
> > 790, boots fine with
> >> 4.1.3
> >> 
> >> I have a similar crash on Xen 4.2.0-rc3 with HP DC7900, reboot right
> >> after loading Dom0 kernel. I found a workaround by pass xsave=0 option
> >> to the xen kernel. It seems to be CPU related, same setup (same xen,
> >> Dom0 kernel version) works fine on another Dell Precision 3200.
> > 
> > Thanks, just saw this as I wasn't cc'ed on your email.  xsave=0
> > did solve my problem also.
> 
> But that was known to be required only with certain, non-upstream
> broken kernels (which got their own xsave handling wrong). Can
> either of you confirm this is a problem with a plain upstream kernel
> now too (and if so, which version(s))?

I can confirm. Have a brand new AMD machine that goes bellyup with that
with a Fedora stock kernel and with a vanialla (v3.5 or v3.6-rc2) works
just right.

> 
> Jan
> 
> 
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> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel
> 

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