Re: AESNI and guest hosts

[Brian Jackson <iggy@theiggy.com>]

On Tuesday, February 14, 2012 03:31:10 AM Ryan Brown wrote:
> Sorry for being a noob here, Any clues with this?, anyone ...
> 
> On Mon, Feb 13, 2012 at 2:05 AM, Ryan Brown <mp3geek@gmail.com> wrote:
> > Host/KVM server is running linux 3.2.4 (Debian wheezy), and guest
> > kernel is running 3.2.5. The cpu is an E3-1230, but for some reason
> > its not able to supply the guest with aesni. Is there a config option
> > or is there something we're missing?



I don't think it's supported to pass that functionality to the guest.



> > 
> >    <cpu>
> >     <arch>x86_64</arch>
> >     <model>Westmere</model>
> >     <vendor>Intel</vendor>
> >     <topology sockets='1' cores='4' threads='2'/>
> >     <feature name='rdtscp'/>
> >     <feature name='x2apic'/>
> >     <feature name='xtpr'/>
> >     <feature name='tm2'/>
> >     <feature name='est'/>
> >     <feature name='vmx'/>
> >     <feature name='ds_cpl'/>
> >     <feature name='monitor'/>
> >     <feature name='pbe'/>
> >     <feature name='tm'/>
> >     <feature name='ht'/>
> >     <feature name='ss'/>
> >     <feature name='acpi'/>
> >     <feature name='ds'/>
> >    <feature name='vme'/>
> >  </cpu>
> > 
> > Guest:
> > [root@fanboy:~]# cat /proc/cpuinfo
> > processor       : 0
> > vendor_id       : GenuineIntel
> > cpu family      : 6
> > model           : 2
> > model name      : QEMU Virtual CPU version 1.0
> > stepping        : 3
> > microcode       : 0x1
> > cpu MHz         : 3192.748
> > cache size      : 4096 KB
> > fdiv_bug        : no
> > hlt_bug         : no
> > f00f_bug        : no
> > coma_bug        : no
> > fpu             : yes
> > fpu_exception   : yes
> > cpuid level     : 4
> > wp              : yes
> > flags           : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca
> > cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm pni cx16 popcnt
> > hypervisor lahf_lm
> > bogomips        : 6385.49
> > clflush size    : 64
> > cache_alignment : 64
> > address sizes   : 40 bits physical, 48 bits virtual
> > power management:
> > 
> > processor       : 1
> > vendor_id       : GenuineIntel
> > cpu family      : 6
> > model           : 2
> > model name      : QEMU Virtual CPU version 1.0
> > stepping        : 3
> > microcode       : 0x1
> > cpu MHz         : 3192.748
> > cache size      : 4096 KB
> > fdiv_bug        : no
> > hlt_bug         : no
> > f00f_bug        : no
> > coma_bug        : no
> > fpu             : yes
> > fpu_exception   : yes
> > cpuid level     : 4
> > wp              : yes
> > flags           : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca
> > cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm pni cx16 popcnt
> > hypervisor lahf_lm
> > bogomips        : 6385.49
> > clflush size    : 64
> > cache_alignment : 64
> > address sizes   : 40 bits physical, 48 bits virtual
> 
> > power management:
> --
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