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KVM: arm64: Remove dead code resetting HCR_EL2 for pKVM

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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>
This commit is contained in:
Fuad Tabba 2026-01-22 11:22:15 +00:00 committed by Marc Zyngier
parent 9ace4753a5
commit c103c2dfe4
1 changed files with 0 additions and 5 deletions
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5
arch/arm64/kvm/hyp/nvhe/hyp-init.S
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@ -260,11 +260,6 @@ reset:
msr sctlr_el2, x5
isb
alternative_if ARM64_KVM_PROTECTED_MODE
mov_q x5, HCR_HOST_NVHE_FLAGS
msr_hcr_el2 x5
alternative_else_nop_endif
/* Install stub vectors */
adr_l x5, __hyp_stub_vectors
msr vbar_el2, x5