| Summary: | mmxext detection on intel penm wrong | ||
|---|---|---|---|
| Product: | liboil | Reporter: | Stefan Kost <ensonic> |
| Component: | unknown | Assignee: | David Schleef <ds> |
| Status: | RESOLVED NOTABUG | QA Contact: | David Schleef <ds> |
| Severity: | normal | ||
| Priority: | medium | CC: | bugzilla, slomo |
| Version: | unspecified | ||
| Hardware: | Other | ||
| OS: | All | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
OTOH Wikipedia and the liboil comments suggest that extended MMX is a subset of what Intel added as SSE2 to their CPUs so it might be correct. What brings goom to crash is the femms instruction that is part of 3dnow. Yup, not a liboil bug. Use OIL_IMPL_FLAG_3DNOW. |
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The new version of gstreamers goom in plugins-good uses: if (cpuFlavour & OIL_IMPL_FLAG_MMXEXT) { $ GST_DEBUG="goom:3" totem 0:00:01.435592590 23915 0x809b470 INFO goom plugin_info.c:43:setOptimizedMethods: liboil cpu flags: 0x001f0000 0:00:01.435750999 23915 0x809b470 INFO goom plugin_info.c:47:setOptimizedMethods: have an x86 0:00:01.435804082 23915 0x809b470 INFO goom plugin_info.c:49:setOptimizedMethods: Extended MMX detected. Using the fastest methods! this does not correlate with $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : Intel(R) Pentium(R) M processor 1.86GHz stepping : 8 cpu MHz : 800.000 cache size : 2048 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe up est tm2 bogomips : 1598.38 clflush size : 64 The bug for goom plugin is: http://bugzilla.gnome.org/show_bug.cgi?id=518564