int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
{
	loaded_vmcs->vmcs = alloc_vmcs(false);
	if (!loaded_vmcs->vmcs)
		return -ENOMEM;

	vmcs_clear(loaded_vmcs->vmcs);

	loaded_vmcs->shadow_vmcs = NULL;
	loaded_vmcs->hv_timer_soft_disabled = false;
	loaded_vmcs->cpu = -1;
	loaded_vmcs->launched = 0;

	if (cpu_has_vmx_msr_bitmap()) {
		loaded_vmcs->msr_bitmap = (unsigned long *)
				__get_free_page(GFP_KERNEL_ACCOUNT);
		if (!loaded_vmcs->msr_bitmap)
			goto out_vmcs;
		memset(loaded_vmcs->msr_bitmap, 0xff, PAGE_SIZE);

		if (IS_ENABLED(CONFIG_HYPERV) &&
		    static_branch_unlikely(&enable_evmcs) &&
		    (ms_hyperv.nested_features & HV_X64_NESTED_MSR_BITMAP)) {
			struct hv_enlightened_vmcs *evmcs =
				(struct hv_enlightened_vmcs *)loaded_vmcs->vmcs;

			evmcs->hv_enlightenments_control.msr_bitmap = 1;
		}
	}

	memset(&loaded_vmcs->host_state, 0, sizeof(struct vmcs_host_state));
	memset(&loaded_vmcs->controls_shadow, 0,
		sizeof(struct vmcs_controls_shadow));

	return 0;

out_vmcs:
	free_loaded_vmcs(loaded_vmcs);
	return -ENOMEM;
}
Unknown