| // SPDX-License-Identifier: GPL-2.0-only |
| * Based on the x86 implementation. |
| * Copyright (C) 2012 ARM Ltd. |
| * Author: Marc Zyngier <marc.zyngier@arm.com> |
| #include <linux/perf_event.h> |
| #include <linux/kvm_host.h> |
| #include <asm/kvm_emulate.h> |
| DEFINE_STATIC_KEY_FALSE(kvm_arm_pmu_available); |
| static int kvm_is_in_guest(void) |
| return kvm_get_running_vcpu() != NULL; |
| static int kvm_is_user_mode(void) |
| vcpu = kvm_get_running_vcpu(); |
| return !vcpu_mode_priv(vcpu); |
| static unsigned long kvm_get_guest_ip(void) |
| vcpu = kvm_get_running_vcpu(); |
| static struct perf_guest_info_callbacks kvm_guest_cbs = { |
| .is_in_guest = kvm_is_in_guest, |
| .is_user_mode = kvm_is_user_mode, |
| .get_guest_ip = kvm_get_guest_ip, |
| return perf_register_guest_info_callbacks(&kvm_guest_cbs); |
| int kvm_perf_teardown(void) |
| return perf_unregister_guest_info_callbacks(&kvm_guest_cbs); |