[Qemu-devel] [Bug 588127] Re: qemu fails to recognize host features SSE4.1, SSE4.2

[Jes Sorensen]

Tried this on with two versions of QEMU (0.12.50 out of CVS) and qemu-
kvm 0.12.1:

QEMU emulator version 0.12.50, Copyright (c) 2003-2008 Fabrice Bellard
QEMU PC emulator version 0.12.1 (qemu-kvm-devel), Copyright (c) 2003-2008 
Fabrice Bellard

model name      : Intel(R) Xeon(R) CPU           E5520  @ 2.27GHz

In both cases I am able to specify the sse4.1 and sse4.2 flags without
problems.

Are you building QEMU with strange flags, or running binaries from a
vendor somewhere?

Cheers,
Jes

-- 
qemu fails to recognize host features SSE4.1, SSE4.2
https://bugs.launchpad.net/bugs/588127
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Status in QEMU: New

Bug description:
Tested on qemu v0.11.0 and v0.12.3:

>qemu-kvm -cpu core2duo,+sse4.1,+sse4.2
CPU feature sse4.1 not found
CPU feature sse4.2 not found

>egrep "model name|flags" /proc/cpuinfo | sort -r | uniq
model name      : Intel(R) Xeon(R) CPU           X5570  @ 2.93GHz
flags           : fpu vme de pse tsc msr pae mce cx8 apic 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 tsc_reliable nonstop_tsc 
pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 
popcnt lahf_lm tpr_shadow vnmi flexpriority ept vpid