Re: [Xen-devel] [PATCH v2 5/6] xen/PMU: Intercept PMU-related MSR and APIC accesses

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 06/12/2014 02:56 AM, Dietmar Hahn wrote:
> +
> +unsigned long long xen_intel_read_pmc(int counter)
> +{
> +       int err;
> +       uint32_t msr;
> +
> +       if (counter & (1<<30))
> What means the 30? Should be a #define ...?
Bit 30 of the counter determines whether the counter is general-purpose 
or fixed.
Even though this is used only once I suppose I could make a define for 
it since there are a couple of other macros like that.

-boris

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