Re: Need help in understanding x86 syscall

Coywolf Qi Hunt
2005-08-11T16:34:45Z

On 8/12/05, Steven Rostedt <rostedt@goodmis.org> wrote:
> On Thu, 2005-08-11 at 11:51 -0400, Steven Rostedt wrote:
> >
> > And booted it. The system is up and running, so I really don't think
> > that the sysenter_entry is used for system calls.
> >
> > Not so "Clear as day"!
>
> And so, looking into sysenter_entry, it seems that my configurations
> don't seem to use it. This jumps straight to system_call without ever
> having to turn interrupts on.
>
> # cat /proc/cpuinfo
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 8
> model name : Pentium III (Coppermine)
> stepping : 3
> cpu MHz : 367.939
> cache size : 256 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 pse36 mmx fxsr sse
> bogomips : 722.94
>
>
> -- Steve
>

The cpu does have sep. Is it vanilla kernel?

--
Coywolf Qi Hunt