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diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.18/Documentation/Changes linux/Documentation/Changes
@@ -517,6 +517,28 @@
 Older isdn4k-utils versions don't support EXTRAVERSION into kernel version
 string. A upgrade to isdn4k-utils.v3.1beta7 or later is recomented.
 
+Intel IA32 microcode
+====================
+
+A driver has been added to allow updating of Intel IA32 microcode,
+accessible as both a devfs regular file and as a normal (misc)
+character device.  If you are not using devfs you may need to:
+
+mkdir /dev/cpu
+mknod /dev/cpu/microcode c 10 184
+chmod 0644 /dev/cpu/microcode
+
+as root before you can use this.  You'll probably also want to
+get the user-space microcode_ctl utility to use with this.
+
+If you have compiled the driver as a module you may need to add
+the following line:
+
+alias char-major-10-184 microcode
+
+to your /etc/modules.conf file.
+
+
 Where to get the files
 **********************
 

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