Carsten Aulbert wrote: > > There may be similar information elsewhere in /proc; I don't know what > > /proc/cpuinfo says for 64-bit architectures. > > Not much I fear: > > This is a 32bit Centrino: > 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 nx up est tm2 > This a 64bit Athlon: > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext > fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm cr8_legacy > This a 64bit Opteron: > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext > fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm cr8_legacy I think that "lm" might be relevant; this corresponds to the following flag in <asm/cpufeature.h>: #define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */ It's considered an AMD flag, so I don't know if it will be present on an ia64 system. -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> - To unsubscribe from this list: send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html