Re: [tip:perfcounters/core] perf_counter, x86: removeX86_FEATURE_ARCH_PERFMON flag for AMD cpus

[Jaswinder Singh Rajput]

On Mon, 2009-05-11 at 12:02 +0200, Ingo Molnar wrote:
> * Jaswinder Singh Rajput <jaswinder@xxxxxxxxxx> wrote:
> 
> > There is one more way to check performance monitor support for 
> > Intel by using IA32_MISC_ENABLE MSR (0x1A0) bit 7 tells whether 
> > performance monitoring is available or not.
> > 
> > But IA32_MISC_ENABLE MSR (0x1A0) is not available for Pentium and 
> > P6.
> > 
> > So better I will add new cpufeature for performance monitoring for 
> > x86:
> > 
> > X86_FEATURE_PERFMON : Performance monitor support
> 
> What is the exact wording of IA32_MISC_ENABLE bit 7 in the Intel 
> documents?
> 

Bit 7: Performance Monitoring Available. (R)
       1 = Performance monitoring enabled
       0 = Performance monitoring disabled

--
JSR


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