[PATCH 4.15 064/202] [Variant 2/Spectre-v2] arm64: Move BP hardening to check_and_switch_context

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Marc Zyngier Commit a8e4c0a919ae upstream. We call arm64_apply_bp_hardening() from post_ttbr_update_workaround, which has the unexpected consequence of being triggered

[PATCH 4.15 064/202] [Variant 2/Spectre-v2] arm64: Move BP hardening to check_and_switch_context

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Marc Zyngier Commit a8e4c0a919ae upstream. We call arm64_apply_bp_hardening() from post_ttbr_update_workaround, which has the unexpected consequence of being triggered on every exception