[PATCH] arm64: prevent instrumentation of bp hardening callbacks

[Mark Brown]

On Thu, Feb 24, 2022 at 06:10:28PM +0000, Mark Rutland wrote:
> We may call arm64_apply_bp_hardening() early during entry (e.g. in
> el0_ia()) before it is safe to run instrumented code. Unfortunately this
> may result in running instrumented code in two cases:

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