64bit Windows guests on Intel Xeon E5520

64bit Windows guests on Intel Xeon E5520

[Matteo Ghezzi]

Hi,
i got a new Xeon E5520 (4 cores, 8 threads), and I'm testing some
Windows guests.
My configuration is as follows:
- Arch Linux
- Kernel 2.6.32.7
- Qemu-Kvm 0.12.2

1st test: identify the correct line for smp in my case, I tried with:
-smp 8,cores=4,threads=8 in this way only Windows 2003 Server works
fine (showing 8 cpus), blue screen for Windows Server 2008 and Windows
7 (both 32bit and 64 bit versions)

2nd test: i lowered smp to 4 and installed both windows 7 and windows
server 2008.
Installation goes fine, but at first boot I get:
kvm: unhandled exit 80000021
kvm_run returned -22
This only with 64bit guests, 32bit guests boot fine
I've tried to delete the smp call from the commandline, but with 1 cpu
I got the same problem on 64bit guests

I have another E5520 coming for my dual motherboard... what smp line
do you suggest for a system with 2 cpu, 8 physical cores and 16
threads?

Thanks for your attention.

Re: 64bit Windows guests on Intel Xeon E5520

[Gleb Natapov]

On Thu, Feb 11, 2010 at 12:51:33AM +0100, Matteo Ghezzi wrote:
> Hi,
> i got a new Xeon E5520 (4 cores, 8 threads), and I'm testing some
> Windows guests.
> My configuration is as follows:
> - Arch Linux
> - Kernel 2.6.32.7
> - Qemu-Kvm 0.12.2
> 
> 1st test: identify the correct line for smp in my case, I tried with:
> -smp 8,cores=4,threads=8 in this way only Windows 2003 Server works
> fine (showing 8 cpus), blue screen for Windows Server 2008 and Windows
> 7 (both 32bit and 64 bit versions)
> 
If BSOD says that your BIOS is not ACPI compliant or something similar
them this is know BIOS problem. Should be fixed shortly.

> 2nd test: i lowered smp to 4 and installed both windows 7 and windows
> server 2008.
> Installation goes fine, but at first boot I get:
> kvm: unhandled exit 80000021
> kvm_run returned -22
> This only with 64bit guests, 32bit guests boot fine
> I've tried to delete the smp call from the commandline, but with 1 cpu
> I got the same problem on 64bit guests
> 
> I have another E5520 coming for my dual motherboard... what smp line
> do you suggest for a system with 2 cpu, 8 physical cores and 16
> threads?
> 
> Thanks for your attention.
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--
			Gleb.