Debian Linux Images

I have installed Debian (Jessie 8.0) on a BeagleBone Black Board and I’m using the RCNs repository (http://repos.rcn-ee.net).

I have seen that there are several linux image builds, from each version:

linux-image-3.19.0-rc7-armv7-lpae-x0 - Linux kernel, version 3.19.0-rc7-armv7-lpae-x0
linux-image-3.19.0-rc7-armv7-x3 - Linux kernel, version 3.19.0-rc7-armv7-x3
linux-image-3.19.0-rc7-bone2 - Linux kernel, version 3.19.0-rc7-bone2
linux-image-3.19.0-rc7-bone3 - Linux kernel, version 3.19.0-rc7-bone3

What do those different suffixes (lpae,x0, x3, bone2, bone3) stands for ?

Thank you,

https://groups.google.com/d/msg/beagleboard/CXS1R2DYGdY/5XWu-3ICjLwJ

Regards,