KVM: arm64: Intercept host's SYSTEM_SUSPEND PSCI SMCs

SYM_CODE_END(kvm_hyp_cpu_entry)

/*

 * PSCI CPU_SUSPEND entry point

 * PSCI CPU_SUSPEND / SYSTEM_SUSPEND entry point

 *

 * x0: struct kvm_nvhe_init_params PA

 */

			 __hyp_pa(init_params));

}

static int psci_system_suspend(u64 func_id, struct kvm_cpu_context *host_ctxt)

{

	DECLARE_REG(unsigned long, pc, host_ctxt, 1);

	DECLARE_REG(unsigned long, r0, host_ctxt, 2);

	struct psci_boot_args *boot_args;

	struct kvm_nvhe_init_params *init_params;

	boot_args = this_cpu_ptr(hyp_symbol_addr(suspend_args));

	init_params = this_cpu_ptr(hyp_symbol_addr(kvm_init_params));

	/*

	 * No need to acquire a lock before writing to boot_args because a core

	 * can only suspend itself. Racy CPU_ON calls use a separate struct.

	 */

	boot_args->pc = pc;

	boot_args->r0 = r0;

	/* Will only return on error. */

	return psci_call(func_id,

			 __hyp_pa(hyp_symbol_addr(kvm_hyp_cpu_resume)),

			 __hyp_pa(init_params), 0);

}

asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on)

{

	struct psci_boot_args *boot_args;

	case PSCI_1_0_FN_SET_SUSPEND_MODE:

	case PSCI_1_1_FN64_SYSTEM_RESET2:

		return psci_forward(host_ctxt);

	case PSCI_1_0_FN64_SYSTEM_SUSPEND:

		return psci_system_suspend(func_id, host_ctxt);

	default:

		return psci_0_2_handler(func_id, host_ctxt);

	}