| // SPDX-License-Identifier: GPL-2.0-or-later | |
| /* | |
| * Extracted from cputable.c | |
| * | |
| * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org) | |
| * | |
| * Modifications for ppc64: | |
| * Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com> | |
| * Copyright (C) 2005 Stephen Rothwell, IBM Corporation | |
| */ | |
| #include <linux/export.h> | |
| #include <linux/cache.h> | |
| #include <linux/of.h> | |
| #include <asm/firmware.h> | |
| #include <asm/kvm_guest.h> | |
| #ifdef CONFIG_PPC64 | |
| unsigned long powerpc_firmware_features __read_mostly; | |
| EXPORT_SYMBOL_GPL(powerpc_firmware_features); | |
| #endif | |
| #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_GUEST) | |
| DEFINE_STATIC_KEY_FALSE(kvm_guest); | |
| EXPORT_SYMBOL_GPL(kvm_guest); | |
| int __init check_kvm_guest(void) | |
| { | |
| struct device_node *hyper_node; | |
| hyper_node = of_find_node_by_path("/hypervisor"); | |
| if (!hyper_node) | |
| return 0; | |
| if (of_device_is_compatible(hyper_node, "linux,kvm")) | |
| static_branch_enable(&kvm_guest); | |
| of_node_put(hyper_node); | |
| return 0; | |
| } | |
| core_initcall(check_kvm_guest); // before kvm_guest_init() | |
| #endif |