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+Intel Microcode Update Utility for Linux
+
+The microcode_ctl utility is a companion to the IA32 microcode driver written
+by Tigran Aivazian <tigran@aivazian.fsnet.co.uk>. The utility has two uses:
+
+* It decodes and sends new microcode to the kernel driver to be uploaded
+ to Intel IA32 processors. (Pentium Pro, PII, PIII, Pentium 4, Celeron,
+ Xeon etc - all P6 and above, which does NOT include pentium classics).
+ It also supports processors of the x86_64 architecture.
+* It signals the kernel driver to release any buffers it may hold.
+
+The microcode update is volatile and needs to be uploaded on each system
+boot i.e. it doesn't reflash your cpu permanently, reboot and it reverts
+back to the old microcode.
+
+To use this utility you need to compile the kernel driver (found under
+"Processor type and features"). The microcode itself can be found at
+http://downloadcenter.intel.com/default.aspx and should be placed under
+/etc/microcode.dat You probably want to have your microcode updated
+each time the system boots, then call "/usr/sbin/microcode_ctl -u" from
+/etc/rc.d/rc.local