dual booting

[Lennart Sorensen]

On Tue, Jan 05, 2010 at 12:45:19PM -0800, William Park wrote:
> Similar to mine:
>      $ /usr/local/kvm/bin/qemu-system-x86_64  --help | head -n 1
>      QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2), Copyright (c) 2003-2008 Fabrice Bellard
> 
>     $ lsmod | grep kvm
>     kvm_amd                34271  0

That one should show higher than 0 if kvm is running and using it.

I use these options:

kvm -daemonize -localtime -usbdevice tablet -smp 2 -m 2047 -hda disk.img -vga std -net user,vlan=0 -net nic,vlan=0,model=e1000,macaddr=52:54:00:00:00:01

>     kvm                   248305  1 kvm_amd
> 
>     $ dmesg | grep kvm
>     kvm: Nested Virtualization enabled

I wonder what 'Nested' refers to.

> And, my cpu has AMD-V (svm).

I have never tried one of those, only intel vt-x ones.

>     $ cat /proc/cpuinfo | grep svmq
>     flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
>                         pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall
>                         nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow up rep_good
>                         extd_apicid pni cx16 lahf_lm svm extapic cr8_legacy
> 
> Maybe AMD is faking something, in order to achieve 45W "low power"
> 2.4GHz cpu.  Or, maybe, ASUS is faking something on the motherboard.
> The fact that it can boot from USB cdrom, but not from USB harddisk,
> doesn't inspire confidence.

That's not likely.  AMD can't afford to develop lots of different cores
for no good reason the way intel does.

-- 
Len Sorensen
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