Cregit: Linux 5.13: firmware.c

Contributors: 7
Author	Tokens	Token Proportion	Commits	Commit Proportion
Nicholas Piggin	60	60.61%	1	11.11%
Srikar Dronamraju	18	18.18%	3	33.33%
Michael Ellerman	8	8.08%	1	11.11%
Stephen Rothwell	6	6.06%	1	11.11%
Paul Gortmaker	4	4.04%	1	11.11%
Thomas Gleixner	2	2.02%	1	11.11%
Anton Blanchard	1	1.01%	1	11.11%
Total	99		9

// 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);
bool check_kvm_guest(void)
{
	struct device_node *hyper_node;

	hyper_node = of_find_node_by_path("/hypervisor");
	if (!hyper_node)
		return false;

	if (!of_device_is_compatible(hyper_node, "linux,kvm"))
		return false;

	static_branch_enable(&kvm_guest);
	return true;
}
#endif