Comment 11 for bug 1395217

Broadwell - Fails, Host won't support it:

warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12]
warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22]
warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0]
warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3]
warning: host doesn't support requested feature: CPUID.07H:EBX.hle [bit 4]
warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5]
warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7]
warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8]
warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9]
warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10]
warning: host doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11]
warning: host doesn't support requested feature: CPUID.07H:EBX.rdseed [bit 18]
warning: host doesn't support requested feature: CPUID.07H:EBX.adx [bit 19]
warning: host doesn't support requested feature: CPUID.07H:EBX.smap [bit 20]
warning: host doesn't support requested feature: CPUID.80000001H:ECX.3dnowprefetch [bit 8]
qemu-system-x86_64: Host doesn't support requested features

Haswell fails, host won't support it:

warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12]
warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22]
warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0]
warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3]
warning: host doesn't support requested feature: CPUID.07H:EBX.hle [bit 4]
warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5]
warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7]
warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8]
warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9]
warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10]
warning: host doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11]
qemu-system-x86_64: Host doesn't support requested features

SandyBridge (this is the test box physical CPU) fails, no errors, networking dead, as per initial problem.

Westmere fails, no networking.

Nehalem fails, no networking

Panryn fails, no networking

Conroe fails, no networking

host fails, no networking

Just to ensure that all else was good, I tested SandyBridge, Westmere, Conroe, and host with "-x2apic" and every one works with x2apic disabled.

This test box is a laptop, and I am only testing on it since I am away from my primary server (Dell 2950) for the holiday. Both Intel, but not even close to the same CPU . . . same problem observed on both, although workaround not tested yet on primary.

Test box (for this data) CPU into:

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz
stepping : 7
microcode : 0x25
cpu MHz : 1200.000
cache size : 3072 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
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 c
onstant_tsc arch_perfmon pebs bts nopl xtopology nonstop_tsc aperfmperf eagerfpu
 pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid s
se4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb
 xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 4984.29
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

(Repeats for 4 cores)

Primary system:

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5345 @ 2.33GHz
stepping : 7
microcode : 0x6b
cpu MHz : 2000.000
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 10
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 lm constant
_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vm
x est tm2 ssse3 cx16 xtpr pdcm dca lahf_lm dtherm tpr_shadow
bogomips : 4655.23
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

(Repeats for 8 cores)