This set of patches implements the core Linux support for the AArch64 (64-bit ARM) architecture. ARM introduced AArch64 as part of the ARMv8 architecture and consists of a substantially revised exception model (with 4 exception levels: EL0 - user, EL1 - kernel, EL2 - hypervisor, EL3 - secure monitor), new A64 instruction set based on larger register file, new FP/SIMD instructions. The new ABI is LP64 and takes advantage of the larger register file and mandates FP. AArch64 documentation currently available (publicly, though click-through agreement required): - Instruction Set Overview:http://infocenter.arm.com/help/topic/com.arm.doc.genc010197a/index.html - ABI (PCS, ELF, DWARF, C++):http://infocenter.arm.com/help/topic/com.arm.doc.ihi0059a/index.html The AArch64 Linux port...