Re: [Xen-users] xen and 64 bit host OSes

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

[32 bit Xen on 64 bit]
> > Should work - what version of Xen were you using?
>
> I used the Xen 2.0 and it holds after requesting some modules. With Xen 3.0
> it boots without that.
>
> First I tried the SuSE 9.3 Xen kernel, but that one stops after "NET:
> Registered protocol family 16"...

I suspect that's because of some quirk of your mobo...  Xen 2.0 is happy with 
the CPU but tripping up because of some other hardware support.  Ditto for 
SuSE 9.3, which includes Xen 2.0 binaries.

Xen 3.0 uses different platform initialisation code to be compatible with more 
systems - that's probably what fixed your problem.  32-bit Xen 3.0 would 
probably be happy on your system too ;-)

> > It really *should* work on the unstable tree now, since it's in
> > pre-release stabilisation.  Can you try again with the latest unstable?
> > If it doesn't work, now would be a good time to let us know ;-)
>
> My version is from 2005-09-14 04:22 (xen-unstable-install-x86_64.tgz).
> Maybe I have used the wrong one? Do I need some special configuration for
> SMP? These were my first steps, so I tried the binary ones. Should I make
> my one Xen kernel?

There was talk of enabling SMP by default but it appears not to be the case in 
the standard xen0 / xenU kernels.  Make your own Xen kernel and it will 
(probably) Just Work :-)

HTH,
Mark

> > We want Xen 3.0 to support the vast majority of x86 and x86_64 machines.
> > We should run on almost anything native Linux works on.
>
> Maybe a "cat /proc/cpuinfo" helps out?
>
> Thanx for help,
> Sven.
>
>
> Xen 3.0 unstable kernel:
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 4
> model name      :                   Intel(R) Xeon(TM) CPU 3.20GHz
> stepping        : 1
> cpu MHz         : 3200.282
> cache size      : 1024 KB
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 5
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm
> constant_tsc pni monitor ds_cpl cid cx16 xtpr
> bogomips        : 6396.31
> clflush size    : 64
> cache_alignment : 128
> address sizes   : 36 bits physical, 48 bits virtual
>
>
>
> SuSE normal kernel: (same for processor 1-3)
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 15
> model           : 4
> model name      :                   Intel(R) Xeon(TM) CPU 3.20GHz
> stepping        : 1
> cpu MHz         : 3200.259
> cache size      : 1024 KB
> physical id     : 0
> siblings        : 2
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 5
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm
> pni monitor ds_cpl cid cx16 xtpr
> bogomips        : 6324.22
> clflush size    : 64
> cache_alignment : 128
> address sizes   : 36 bits physical, 48 bits virtual
> power management:

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