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Model-Specific Registers: per-processor extensions in the x86 family, discoverable via [[cpuid]].
Model-Specific Registers: per-processor extensions in the x86 family, discoverable via [[cpuid]]. Unlike the [[CPUID]] registers, many are configurable. MSR's are read and written at the assembly level via the <tt>RDMSR</tt> and <tt>WRMSR</tt> instructions.


==See Also==
==See Also==
* [[Performance Counters]]
* [[Performance Counters]]
[[Category: x86]]

Revision as of 03:34, 12 September 2009

Model-Specific Registers: per-processor extensions in the x86 family, discoverable via cpuid. Unlike the CPUID registers, many are configurable. MSR's are read and written at the assembly level via the RDMSR and WRMSR instructions.

See Also