KVM: arm64: Add function to enter host from KVM nVHE hyp code

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All nVHE hyp code is currently executed as handlers of host's HVCs. This
will change as nVHE starts intercepting host's PSCI CPU_ON SMCs. The
newly booted CPU will need to initialize EL2 state and then enter the
host. Add __host_enter function that branches into the existing
host state-restoring code after the trap handler would have returned.

Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201202184122.26046-21-dbrazdil@google.com

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David Brazdil 2020-12-02 18:41:16 +00:00 • committed by Marc Zyngier

parent f74e1e2128

commit 04e05f057a

1 changed files with 9 additions and 0 deletions

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arch/arm64/kvm/hyp/nvhe/host.S

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