diff options
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/irq.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/irq_comm.c | 7 | ||||
| -rw-r--r-- | arch/x86/kvm/pmu.c | 6 | ||||
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 11 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/main.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 80 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/x86_ops.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 36 |
8 files changed, 62 insertions, 82 deletions
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h index c2d7cfe82d00..76d46b2f41dd 100644 --- a/arch/x86/kvm/irq.h +++ b/arch/x86/kvm/irq.h @@ -106,7 +106,6 @@ void __kvm_migrate_timers(struct kvm_vcpu *vcpu); int apic_has_pending_timer(struct kvm_vcpu *vcpu); int kvm_setup_default_irq_routing(struct kvm *kvm); -int kvm_setup_empty_irq_routing(struct kvm *kvm); int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src, struct kvm_lapic_irq *irq, struct dest_map *dest_map); diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c index 68f3f6c26046..8136695f7b96 100644 --- a/arch/x86/kvm/irq_comm.c +++ b/arch/x86/kvm/irq_comm.c @@ -395,13 +395,6 @@ int kvm_setup_default_irq_routing(struct kvm *kvm) ARRAY_SIZE(default_routing), 0); } -static const struct kvm_irq_routing_entry empty_routing[] = {}; - -int kvm_setup_empty_irq_routing(struct kvm *kvm) -{ - return kvm_set_irq_routing(kvm, empty_routing, 0, 0); -} - void kvm_arch_post_irq_routing_update(struct kvm *kvm) { if (!irqchip_split(kvm)) diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c index a593b03c9aed..f9149c9fc275 100644 --- a/arch/x86/kvm/pmu.c +++ b/arch/x86/kvm/pmu.c @@ -521,9 +521,9 @@ void kvm_pmu_handle_event(struct kvm_vcpu *vcpu) } /* - * Unused perf_events are only released if the corresponding MSRs - * weren't accessed during the last vCPU time slice. kvm_arch_sched_in - * triggers KVM_REQ_PMU if cleanup is needed. + * Release unused perf_events if the corresponding guest MSRs weren't + * accessed during the last vCPU time slice (need_cleanup is set when + * the vCPU is scheduled back in). */ if (unlikely(pmu->need_cleanup)) kvm_pmu_cleanup(vcpu); diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index c58da281f14f..80ac33a5effe 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -1554,6 +1554,9 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu) struct vcpu_svm *svm = to_svm(vcpu); struct svm_cpu_data *sd = per_cpu_ptr(&svm_data, cpu); + if (vcpu->scheduled_out && !kvm_pause_in_guest(vcpu->kvm)) + shrink_ple_window(vcpu); + if (sd->current_vmcb != svm->vmcb) { sd->current_vmcb = svm->vmcb; @@ -4607,12 +4610,6 @@ static void svm_handle_exit_irqoff(struct kvm_vcpu *vcpu) vcpu->arch.at_instruction_boundary = true; } -static void svm_sched_in(struct kvm_vcpu *vcpu, int cpu) -{ - if (!kvm_pause_in_guest(vcpu->kvm)) - shrink_ple_window(vcpu); -} - static void svm_setup_mce(struct kvm_vcpu *vcpu) { /* [63:9] are reserved. */ @@ -5075,8 +5072,6 @@ static struct kvm_x86_ops svm_x86_ops __initdata = { .check_intercept = svm_check_intercept, .handle_exit_irqoff = svm_handle_exit_irqoff, - .sched_in = svm_sched_in, - .nested_ops = &svm_nested_ops, .deliver_interrupt = svm_deliver_interrupt, diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c index d4ed681785fd..c7a86be0f30e 100644 --- a/arch/x86/kvm/vmx/main.c +++ b/arch/x86/kvm/vmx/main.c @@ -122,8 +122,6 @@ struct kvm_x86_ops vt_x86_ops __initdata = { .check_intercept = vmx_check_intercept, .handle_exit_irqoff = vmx_handle_exit_irqoff, - .sched_in = vmx_sched_in, - .cpu_dirty_log_size = PML_ENTITY_NUM, .update_cpu_dirty_logging = vmx_update_cpu_dirty_logging, diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index b3c83c06f826..078386582782 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -1411,6 +1411,38 @@ static void vmx_write_guest_kernel_gs_base(struct vcpu_vmx *vmx, u64 data) } #endif +static void grow_ple_window(struct kvm_vcpu *vcpu) +{ + struct vcpu_vmx *vmx = to_vmx(vcpu); + unsigned int old = vmx->ple_window; + + vmx->ple_window = __grow_ple_window(old, ple_window, + ple_window_grow, + ple_window_max); + + if (vmx->ple_window != old) { + vmx->ple_window_dirty = true; + trace_kvm_ple_window_update(vcpu->vcpu_id, + vmx->ple_window, old); + } +} + +static void shrink_ple_window(struct kvm_vcpu *vcpu) +{ + struct vcpu_vmx *vmx = to_vmx(vcpu); + unsigned int old = vmx->ple_window; + + vmx->ple_window = __shrink_ple_window(old, ple_window, + ple_window_shrink, + ple_window); + + if (vmx->ple_window != old) { + vmx->ple_window_dirty = true; + trace_kvm_ple_window_update(vcpu->vcpu_id, + vmx->ple_window, old); + } +} + void vmx_vcpu_load_vmcs(struct kvm_vcpu *vcpu, int cpu, struct loaded_vmcs *buddy) { @@ -1486,6 +1518,9 @@ void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); + if (vcpu->scheduled_out && !kvm_pause_in_guest(vcpu->kvm)) + shrink_ple_window(vcpu); + vmx_vcpu_load_vmcs(vcpu, cpu, NULL); vmx_vcpu_pi_load(vcpu, cpu); @@ -5897,38 +5932,6 @@ int vmx_vcpu_pre_run(struct kvm_vcpu *vcpu) return 1; } -static void grow_ple_window(struct kvm_vcpu *vcpu) -{ - struct vcpu_vmx *vmx = to_vmx(vcpu); - unsigned int old = vmx->ple_window; - - vmx->ple_window = __grow_ple_window(old, ple_window, - ple_window_grow, - ple_window_max); - - if (vmx->ple_window != old) { - vmx->ple_window_dirty = true; - trace_kvm_ple_window_update(vcpu->vcpu_id, - vmx->ple_window, old); - } -} - -static void shrink_ple_window(struct kvm_vcpu *vcpu) -{ - struct vcpu_vmx *vmx = to_vmx(vcpu); - unsigned int old = vmx->ple_window; - - vmx->ple_window = __shrink_ple_window(old, ple_window, - ple_window_shrink, - ple_window); - - if (vmx->ple_window != old) { - vmx->ple_window_dirty = true; - trace_kvm_ple_window_update(vcpu->vcpu_id, - vmx->ple_window, old); - } -} - /* * Indicate a busy-waiting vcpu in spinlock. We do not enable the PAUSE * exiting, so only get here on cpu with PAUSE-Loop-Exiting. @@ -6677,9 +6680,10 @@ static noinstr void vmx_l1d_flush(struct kvm_vcpu *vcpu) bool flush_l1d; /* - * Clear the per-vcpu flush bit, it gets set again - * either from vcpu_run() or from one of the unsafe - * VMEXIT handlers. + * Clear the per-vcpu flush bit, it gets set again if the vCPU + * is reloaded, i.e. if the vCPU is scheduled out or if KVM + * exits to userspace, or if KVM reaches one of the unsafe + * VMEXIT handlers, e.g. if KVM calls into the emulator. */ flush_l1d = vcpu->arch.l1tf_flush_l1d; vcpu->arch.l1tf_flush_l1d = false; @@ -8179,12 +8183,6 @@ void vmx_cancel_hv_timer(struct kvm_vcpu *vcpu) } #endif -void vmx_sched_in(struct kvm_vcpu *vcpu, int cpu) -{ - if (!kvm_pause_in_guest(vcpu->kvm)) - shrink_ple_window(vcpu); -} - void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); diff --git a/arch/x86/kvm/vmx/x86_ops.h b/arch/x86/kvm/vmx/x86_ops.h index 502704596c83..3cb0be94e779 100644 --- a/arch/x86/kvm/vmx/x86_ops.h +++ b/arch/x86/kvm/vmx/x86_ops.h @@ -112,7 +112,6 @@ u64 vmx_get_l2_tsc_multiplier(struct kvm_vcpu *vcpu); void vmx_write_tsc_offset(struct kvm_vcpu *vcpu); void vmx_write_tsc_multiplier(struct kvm_vcpu *vcpu); void vmx_request_immediate_exit(struct kvm_vcpu *vcpu); -void vmx_sched_in(struct kvm_vcpu *vcpu, int cpu); void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu); #ifdef CONFIG_X86_64 int vmx_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc, diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a6968eadd418..e8c34f8e1964 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4998,6 +4998,15 @@ static bool need_emulate_wbinvd(struct kvm_vcpu *vcpu) void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { + struct kvm_pmu *pmu = vcpu_to_pmu(vcpu); + + vcpu->arch.l1tf_flush_l1d = true; + + if (vcpu->scheduled_out && pmu->version && pmu->event_count) { + pmu->need_cleanup = true; + kvm_make_request(KVM_REQ_PMU, vcpu); + } + /* Address WBINVD may be executed by guest */ if (need_emulate_wbinvd(vcpu)) { if (static_call(kvm_x86_has_wbinvd_exit)()) @@ -6546,9 +6555,6 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, goto split_irqchip_unlock; if (kvm->created_vcpus) goto split_irqchip_unlock; - r = kvm_setup_empty_irq_routing(kvm); - if (r) - goto split_irqchip_unlock; /* Pairs with irqchip_in_kernel. */ smp_wmb(); kvm->arch.irqchip_mode = KVM_IRQCHIP_SPLIT; @@ -6695,7 +6701,9 @@ split_irqchip_unlock: break; mutex_lock(&kvm->lock); - if (kvm->arch.max_vcpu_ids == cap->args[0]) { + if (kvm->arch.bsp_vcpu_id > cap->args[0]) { + ; + } else if (kvm->arch.max_vcpu_ids == cap->args[0]) { r = 0; } else if (!kvm->arch.max_vcpu_ids) { kvm->arch.max_vcpu_ids = cap->args[0]; @@ -7216,6 +7224,9 @@ set_pit2_out: mutex_lock(&kvm->lock); if (kvm->created_vcpus) r = -EBUSY; + else if (arg > KVM_MAX_VCPU_IDS || + (kvm->arch.max_vcpu_ids && arg > kvm->arch.max_vcpu_ids)) + r = -EINVAL; else kvm->arch.bsp_vcpu_id = arg; mutex_unlock(&kvm->lock); @@ -11248,7 +11259,6 @@ static int vcpu_run(struct kvm_vcpu *vcpu) int r; vcpu->run->exit_reason = KVM_EXIT_UNKNOWN; - vcpu->arch.l1tf_flush_l1d = true; for (;;) { /* @@ -11398,7 +11408,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) kvm_vcpu_srcu_read_lock(vcpu); if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) { - if (kvm_run->immediate_exit) { + if (!vcpu->wants_to_run) { r = -EINTR; goto out; } @@ -11476,7 +11486,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) WARN_ON_ONCE(vcpu->mmio_needed); } - if (kvm_run->immediate_exit) { + if (!vcpu->wants_to_run) { r = -EINTR; goto out; } @@ -12569,18 +12579,6 @@ bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) return (vcpu->arch.apic_base & MSR_IA32_APICBASE_BSP) != 0; } -void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) -{ - struct kvm_pmu *pmu = vcpu_to_pmu(vcpu); - - vcpu->arch.l1tf_flush_l1d = true; - if (pmu->version && unlikely(pmu->event_count)) { - pmu->need_cleanup = true; - kvm_make_request(KVM_REQ_PMU, vcpu); - } - static_call(kvm_x86_sched_in)(vcpu, cpu); -} - void kvm_arch_free_vm(struct kvm *kvm) { #if IS_ENABLED(CONFIG_HYPERV) |