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KVM: arm64: Remove dead code resetting HCR_EL2 for pKVM

The pKVM lifecycle does not support tearing down the hypervisor and
returning to the hyp stub once initialized. The transition to protected
mode is one-way.

Consequently, the code path in hyp-init.S responsible for resetting
EL2 registers (triggered by kexec or hibernation) is unreachable in
protected mode.

Remove the dead code handling HCR_EL2 reset for
ARM64_KVM_PROTECTED_MODE.

No functional change intended.

Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260122112218.531948-2-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

authored by

Fuad Tabba and committed by
Marc Zyngier c103c2df 9ace4753

-5
-5
arch/arm64/kvm/hyp/nvhe/hyp-init.S
··· 260 260 msr sctlr_el2, x5 261 261 isb 262 262 263 - alternative_if ARM64_KVM_PROTECTED_MODE 264 - mov_q x5, HCR_HOST_NVHE_FLAGS 265 - msr_hcr_el2 x5 266 - alternative_else_nop_endif 267 - 268 263 /* Install stub vectors */ 269 264 adr_l x5, __hyp_stub_vectors 270 265 msr vbar_el2, x5