[PATCH 4.2 062/134] mm: check if section present during memory block registering

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Yinghai Lu commit 04697858d89e4bf2650364f8d6956e2554e8ef88 upstream. Tony Luck found on his setup, if memory block size 512M will cause crash during booting. BUG: unable to handle kernel

[PATCH 4.2 062/134] mm: check if section present during memory block registering

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Yinghai Lu commit 04697858d89e4bf2650364f8d6956e2554e8ef88 upstream. Tony Luck found on his setup, if memory block size 512M will cause crash during booting. BUG: unable