x86 PAT support

modulename: memtype_interval.ko

configname: CONFIG_X86_PAT

Linux Kernel Configuration
└─>Processor type and features
└─>x86 PAT support
In linux kernel since version 2.6.26 (release Date: 2008-07-13)  
Use PAT attributes to setup page level cache control.

PATs are the modern equivalents of MTRRs and are much more
flexible than MTRRs.

Say N here if you see bootup problems (boot crash, boot hang,
spontaneous reboots) or a non-working video driver.

If unsure, say Y.