[pve-devel] [PATCH] enforce cpu check

[Dietmar Maurer]

> But I think that enforce is enough for now,  the vm will stop when starting or
> the targetvm when we do live migration if flags are not supproted

I am unable to start my VMs now:

warning: host doesn't support requested feature: CPUID.40000001H:EAX.kvm_asyncpf [bit 4]
kvm: Host's CPU doesn't support requested features

# cat /etc/pve/local/qemu-server/101.conf
bootdisk: virtio0
cores: 1
ide2: none,media=cdrom
memory: 1024
name: win7-32-spice
net0: virtio=AA:8D:D8:DB:6C:82,bridge=vmbr0
ostype: win7
sockets: 1
tablet: 0
vga: qxl2
virtio0: local:101/vm-101-disk-1.qcow2,format=qcow2,cache=writeback,size=32G

# cat /proc/cpuinfo
..
processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 30
model name	: Intel(R) Xeon(R) CPU           X3470  @ 2.93GHz
stepping	: 5
cpu MHz		: 2933.171
cache size	: 8192 KB
physical id	: 0
siblings	: 8
core id		: 3
cpu cores	: 4
apicid		: 7
initial apicid	: 7
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 nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida dts tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5866.34
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management: