Created attachment 336429 [details] Content of /proc/cpuinfo for Opteron 146, socket 939. Description of problem: File /proc/cpuinfo only displays SSE related flags sse and sse2 for an Opteron 146, socket 939. I believe that no stepping earlier than E4 was available for socket 939. Thus I would expect sse3 to be supported,too. Version-Release number of selected component (if applicable): kernel-2.6.29-0.67.rc8.git4.fc10.x86_64 How reproducible: Always. Steps to Reproduce: 1. Cat /proc/cpuinfo. Actual results: Capabilities sse and sse2 are reported. Expected results: Flag sse3 is returned, too. Additional info: Utility x86info actually reports the processor being an "Opteron/Athlon 64/Athlon 64 FX (SH-E4)", and feature flags also includes sse3.
Created attachment 336430 [details] Output of x86info for Opteron 146, socket 939.
sse3 is called pni in linux for historical reasons.