arm64: stacktrace: Implement arch_bpf_stack_walk() for the BPF JIT

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This will be used by bpf_throw() to unwind till the program marked as
exception boundary and run the callback with the stack of the main
program.

This is required for supporting BPF exceptions on ARM64.

Signed-off-by: Puranjay Mohan <puranjay12@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20240201125225.72796-2-puranjay12@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Puranjay Mohan 2024-02-01 12:52:24 +00:00 • committed by Alexei Starovoitov

parent 2ab256e932

commit e74cb1b422

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arch/arm64/kernel/stacktrace.c

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