Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  Extracted from cputable.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *  Modifications for ppc64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *      Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *  Copyright (C) 2005 Stephen Rothwell, IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/kvm_guest.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) unsigned long powerpc_firmware_features __read_mostly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) EXPORT_SYMBOL_GPL(powerpc_firmware_features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_GUEST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) DEFINE_STATIC_KEY_FALSE(kvm_guest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) int __init check_kvm_guest(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	struct device_node *hyper_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	hyper_node = of_find_node_by_path("/hypervisor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	if (!hyper_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	if (of_device_is_compatible(hyper_node, "linux,kvm"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		static_branch_enable(&kvm_guest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	of_node_put(hyper_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) core_initcall(check_kvm_guest); // before kvm_guest_init()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #endif