H. Peter Anvin wrote: >> i.e. can you safely enable X86_P6_NOP for other CPUs, such as AMD >> K7/K8, VIA C3/C7, or Efficeon? If not, would it be more sensible to >> avoid using these instructions? >> >> It appears that at least some VIA C3 CPUs do not support these opcodes: >> >> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=463606#45 >> > > Attached is a C program which tests this. >
[EMAIL PROTECTED]:~/src# cat /proc/cpuinfo processor : 0 vendor_id : CentaurHauls cpu family : 6 model : 13 model name : VIA C7-D Processor 1500MHz stepping : 0 cpu MHz : 1500.156 cache size : 128 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce apic sep mtrr pge cmov pat clflush acpi mmx fxsr sse sse2 tm nx up pni xtpr rng rng_en ace ace_en ace2 ace2_en phe phe_en pmm pmm_en bogomips : 3002.28 clflush size : 64 [EMAIL PROTECTED]:~/src# ./longnop Long NOPs supported: yes -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
