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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/powerpc/kernel/firmware.c | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/kernel/firmware.c')
| -rw-r--r-- | arch/powerpc/kernel/firmware.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/firmware.c b/arch/powerpc/kernel/firmware.c new file mode 100644 index 0000000000..20328f72f9 --- /dev/null +++ b/arch/powerpc/kernel/firmware.c @@ -0,0 +1,41 @@ +// 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); +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 |