diff options
| -rw-r--r-- | arch/loongarch/include/asm/kvm_host.h | 3 | ||||
| -rw-r--r-- | arch/loongarch/kvm/vcpu.c | 25 |
2 files changed, 27 insertions, 1 deletions
diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h index d8b543b3fa25..2281293a5f59 100644 --- a/arch/loongarch/include/asm/kvm_host.h +++ b/arch/loongarch/include/asm/kvm_host.h @@ -12,6 +12,7 @@ #include <linux/kvm.h> #include <linux/kvm_types.h> #include <linux/mutex.h> +#include <linux/perf_event.h> #include <linux/spinlock.h> #include <linux/threads.h> #include <linux/types.h> @@ -292,6 +293,8 @@ static inline int kvm_get_pmu_num(struct kvm_vcpu_arch *arch) return (arch->cpucfg[6] & CPUCFG6_PMNUM) >> CPUCFG6_PMNUM_SHIFT; } +bool kvm_arch_pmi_in_guest(struct kvm_vcpu *vcpu); + /* Debug: dump vcpu state */ int kvm_arch_vcpu_dump_regs(struct kvm_vcpu *vcpu); diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 66f1e62ff6b8..552cde722932 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -361,9 +361,32 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu) { - return false; + unsigned long val; + + preempt_disable(); + val = gcsr_read(LOONGARCH_CSR_CRMD); + preempt_enable(); + + return (val & CSR_PRMD_PPLV) == PLV_KERN; } +#ifdef CONFIG_GUEST_PERF_EVENTS +unsigned long kvm_arch_vcpu_get_ip(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.pc; +} + +/* + * Returns true if a Performance Monitoring Interrupt (PMI), a.k.a. perf event, + * arrived in guest context. For LoongArch64, if PMU is not passthrough to VM, + * any event that arrives while a vCPU is loaded is considered to be "in guest". + */ +bool kvm_arch_pmi_in_guest(struct kvm_vcpu *vcpu) +{ + return (vcpu && !(vcpu->arch.aux_inuse & KVM_LARCH_PMU)); +} +#endif + bool kvm_arch_vcpu_preempted_in_kernel(struct kvm_vcpu *vcpu) { return false; |