Re: [PATCH v3] kvm-unit-tests : Basic architecture of VMX nested test case

[Marius Vlad <mv@sec.uni-passau.de>]

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Hi Gleb,

On Tue, Jul 30, 2013 at 09:42:12AM +0200, Gleb Natapov wrote:
> On Tue, Jul 30, 2013 at 09:31:17AM +0200, Marius Vlad wrote:
> > Hi Arthur, 
> > 
> >    I'm trying to test your patch on a SandyBridge machine.
> > 
> >    Used 'nested=1' when loading kvm (from 3.9-1-amd64)
> Should be kvm-intel, but you will get error otherwise, so I assume that
> this is what you did.
Indeed.
> 
> >    and qemu (emulator version 1.5.1 (Debian 1.5.0+dfsg-5)).
> > 
> >    Without nested=1 I get ``unhandled excecption 13'', so I presume
> >    this is OK, with it, the test_vmx_capability() fails at
> >    detecting vmx.
> > 
> >    I've used for qemu:
> >    $ qemu-system-x86_64 -enable-kvm -device pc-testdev -device
> >    isa-debug-exit,iobase=0xf4,iosize=0x4 -display none -serial stdio -device
> >    pci-testdev -kernel x86/vmx.flat -cpu SandyBridge,+vmx,+x2apic -smp 1
> > 
> >    Are there any knobs which I should further tune?
> > 
> On the first glance you have everything that is needed. What is the output of
> "cat /proc/cpuinfo" in the guest is?
(initramfs) cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 42
model name      : Intel Xeon E312xx (Sandy Bridge)
stepping        : 1
microcode       : 0x1
cpu MHz         : 3410.012
cache size      : 4096 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx rdtscp lm constant_tsc arch_perfmon rep_good nopl eagerfpu pni pclmulqdq vmx ssse3 cx16 sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm xsaveopt
bogomips        : 6820.02
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

Used: 
$ qemu-system-x86_64 -enable-kvm -device pc-testdev -device\
isa-debug-exit,iobase=0xf4,iosize=0x4 -display none -serial stdio -device\
pci-testdev -kernel /boot/vmlinuz-3.9-1-amd64 -initrd\
/boot/initrd.img-3.9-1-amd64 -append 'init=/bin/bash console=ttyS0' -cpu\
SandyBridge,+vmx,+x2apic -smp 1 -serial stdio
> 
> --
> 			Gleb.
> 

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