arm64: KVM: hypervisor initialization code

Provide EL2 with page tables and stack, and set the vectors
to point to the full blown world-switch code.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 4a2622f5e81f..2500eb6a4d2a 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -183,4 +183,17 @@ int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
 int kvm_perf_init(void);
 int kvm_perf_teardown(void);
 
+static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr,
+                                       phys_addr_t pgd_ptr,
+                                       unsigned long hyp_stack_ptr,
+                                       unsigned long vector_ptr)
+{
+        /*
+         * Call initialization code, and switch to the full blown
+         * HYP code.
+         */
+        kvm_call_hyp((void *)boot_pgd_ptr, pgd_ptr,
+                     hyp_stack_ptr, vector_ptr);
+}
+
 #endif /* __ARM64_KVM_HOST_H__ */