Re: Need help in understanding x86 syscall

[Coywolf Qi Hunt <coywolf@gmail.com>]

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
http://ahbl.org/~coywolf/