After being offine since 2009, the Linux Kernel podcast has restarted. The first new episode mentions an EFI/ACPI patch!
Bhupesh Sharma posted a patch moving in-kernel handling of ACPI BGRT (Boot(time) Graphics Resource) tables out of the x86 architecture tree and into drivers/firmware/efi (so that it can be shared with the 64-bit ARM Architecture).
http://www.kernelpodcast.org/2017/02/20/kernel-podcast-for-feb-20th-2017/