diff options
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 2 | ||||
| -rw-r--r-- | arch/arm64/kvm/Kconfig | 7 | ||||
| -rw-r--r-- | include/kvm/arm_pmu.h | 42 |
3 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 15851f52096b..fb57fdc6a433 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -38,6 +38,7 @@ #include <kvm/arm_vgic.h> #include <kvm/arm_arch_timer.h> +#include <kvm/arm_pmu.h> #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS @@ -213,6 +214,7 @@ struct kvm_vcpu_arch { /* VGIC state */ struct vgic_cpu vgic_cpu; struct arch_timer_cpu timer_cpu; + struct kvm_pmu pmu; /* * Anything that is not used directly from assembly code goes diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index a5272c07d1cb..de7450df7629 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -36,6 +36,7 @@ config KVM select HAVE_KVM_EVENTFD select HAVE_KVM_IRQFD select KVM_ARM_VGIC_V3 + select KVM_ARM_PMU if HW_PERF_EVENTS ---help--- Support hosting virtualized guest machines. We don't support KVM with 16K page tables yet, due to the multiple @@ -48,6 +49,12 @@ config KVM_ARM_HOST ---help--- Provides host support for ARM processors. +config KVM_ARM_PMU + bool + ---help--- + Adds support for a virtual Performance Monitoring Unit (PMU) in + virtual machines. + source drivers/vhost/Kconfig endif # VIRTUALIZATION diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h new file mode 100644 index 000000000000..3c2fd568e0a8 --- /dev/null +++ b/include/kvm/arm_pmu.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2015 Linaro Ltd. + * Author: Shannon Zhao <shannon.zhao@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __ASM_ARM_KVM_PMU_H +#define __ASM_ARM_KVM_PMU_H + +#ifdef CONFIG_KVM_ARM_PMU + +#include <linux/perf_event.h> +#include <asm/perf_event.h> + +struct kvm_pmc { + u8 idx; /* index into the pmu->pmc array */ + struct perf_event *perf_event; + u64 bitmask; +}; + +struct kvm_pmu { + int irq_num; + struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS]; + bool ready; +}; +#else +struct kvm_pmu { +}; +#endif + +#endif |