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Re: [Qemu-devel] Suggested Parameters for SLES 10 64-bit

From: Peter Lieven
Subject: Re: [Qemu-devel] Suggested Parameters for SLES 10 64-bit
Date: Tue, 18 May 2010 15:17:13 +0200
User-agent: Thunderbird (X11/20090817)

Alexander Graf wrote:
Peter Lieven wrote:
we are running on intel xeons here:

That might be the reason. Does it break when passing -no-kvm?

processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 26
model name    : Intel(R) Xeon(R) CPU           L5530  @ 2.40GHz
stepping    : 5
cpu MHz        : 2394.403
cache size    : 8192 KB
physical id    : 1
siblings    : 4
core id        : 0
cpu cores    : 4
apicid        : 16
initial apicid    : 16
fpu        : yes
fpu_exception    : yes
cpuid level    : 11
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 pbe
syscall rdtscp lm constant_tsc arch_perfmon pebs bts rep_good
xtopology tsc_reliable nonstop_tsc pni dtes64 monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm tpr_shadow
vnmi flexpriority ept vpid
bogomips    : 4788.80
clflush size    : 64
cache_alignment    : 64
address sizes    : 40 bits physical, 48 bits virtual
power management:

kvm-kmod is

which commandline parameters do you supply to qemu-kvm?

None :)
It seems to stop working if i supply -no-kvm-irqchip. Can you try to reproduce this?

We introduced that parameter because we encountered some problems with the e1000 kernel driver stopped to work in some guests after live migration with a "nobody cared about interupt" (i don't know the exact error anymore). supplying
-no-kvm-irqchip made live migration of these guests possible...
Sounds that familiar to someone?

which kernel parameters do you use for the sles 10 guest?

Just the default. I took the SP1 DVD, installed it and booted it up. All
is fine:

$ ./x86_64-softmmu/qemu-system-x86_64 -snapshot
/media/studio/images/SUSE/sles10/sles10sp1.x86_64.raw -vnc :10

Running on Intel might be the culprit though. I'll try and check if
booting the image on an Intel box works.


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