diff options
Diffstat (limited to 'arch/powerpc/kernel/firmware.c')
| -rw-r--r-- | arch/powerpc/kernel/firmware.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/firmware.c b/arch/powerpc/kernel/firmware.c index 2eae4478f7a1..8987eee33dc8 100644 --- a/arch/powerpc/kernel/firmware.c +++ b/arch/powerpc/kernel/firmware.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Extracted from cputable.c * @@ -6,17 +7,37 @@ * Modifications for ppc64: * Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com> * Copyright (C) 2005 Stephen Rothwell, IBM Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #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 |