Ard Biesheuvel cc2b8ed136 arm64/bpf: use movn/movk/movk sequence to generate kernel addresses ... On arm64, all executable code is guaranteed to reside in the vmalloc space (or the module space), and so jump targets will only use 48 bits at most, and the remaining bits are guaranteed to be 0x1. This means we can generate an immediate jump address using a sequence of one MOVN (move wide negated) and two MOVK instructions, where the first one sets the lower 16 bits but also sets all top bits to 0x1. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>		2018-11-30 10:23:25 +01:00
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bpf_jit_comp.c	arm64/bpf: use movn/movk/movk sequence to generate kernel addresses	2018-11-30 10:23:25 +01:00
bpf_jit.h	bpf, arm64: implement jiting of BPF_J{LT, LE, SLT, SLE}	2017-08-09 16:53:56 -07:00
Makefile	arm64: eBPF JIT compiler	2014-09-08 14:39:21 +01:00