arm64: KVM: Register CPU notifiers when the kernel runs at HYP
When the kernel is running at EL2, it doesn't need init_hyp_mode() to configure page tables for HYP. This function also registers the CPU hotplug and lower power notifiers that cause HYP to be re-initialised after the CPU has been reset. To avoid losing the register state that controls stage2 translation, move the registering of these notifiers into init_subsystems(), and add a is_kernel_in_hyp_mode() path to each callback. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Fixes: 1e947bad ("arm64: KVM: Skip HYP setup when already running in HYP") Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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