[PATCH v3 2/2] arm64: Work around missing `bti c` in modules

[Mark Brown]

On Thu, Sep 01, 2022 at 05:15:51PM -0700, D Scott Phillips wrote:
> GCC does not insert a `bti c` instruction at the beginning of a function
> when all callers reach the function through a direct branch[1]. In the case
> of cross-section calls (like __init to non __init), a thunk may be inserted
> which uses an indirect branch. If that happens, the first instruction in
> the callee function will result in a Branch Target Exception due to the
> missing `bti c`.

Reviewed-by: Mark Brown <broonie at kernel.org>
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