Re: [PATCH v6 18/33] prctl: arch-agnostic prctl for indirect branch tracking

On Tue, Oct 08, 2024 at 03:37:00PM -0700, Deepak Gupta wrote:

Three architectures (x86, aarch64, riscv) have support for indirect branch tracking feature in a very similar fashion. On a very high level, indirect branch tracking is a CPU feature where CPU tracks branches which uses memory operand to perform control transfer in program. As part of this tracking on indirect branches, CPU goes in a state where it expects a landing pad instr on target and if not found then CPU raises some fault (architecture dependent)

Reviewed-by: Mark Brown broonie@kernel.org