diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 15851f52096b3a72b8a7733ad419334ceb674f47..fb57fdc6a433d31bdc0a8c4dc7064702db942440 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -38,6 +38,7 @@ #include #include +#include #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 a5272c07d1cbf3f72a0689ecc06e07b3aed4161b..de7450df7629961066d0731b237a0fe64c01708e 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 0000000000000000000000000000000000000000..3c2fd568e0a811b30d2f23326c4b4e5cb978ad77 --- /dev/null +++ b/include/kvm/arm_pmu.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2015 Linaro Ltd. + * Author: Shannon Zhao + * + * 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 . + */ + +#ifndef __ASM_ARM_KVM_PMU_H +#define __ASM_ARM_KVM_PMU_H + +#ifdef CONFIG_KVM_ARM_PMU + +#include +#include + +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