search for: track_mod

..._EVENT_ACTION_CONTINUE; /* TODO */ +} + int kvmi_arch_cmd_get_vcpu_info(struct kvm_vcpu *vcpu, struct kvmi_get_vcpu_info_reply *rpl) { @@ -102,3 +108,42 @@ int kvmi_arch_cmd_get_vcpu_info(struct kvm_vcpu *vcpu, return 0; } +static const struct { + unsigned int allow_bit; + enum kvm_page_track_mode track_mode; +} track_modes[] = { + { KVMI_PAGE_ACCESS_R, KVM_PAGE_TRACK_PREREAD }, + { KVMI_PAGE_ACCESS_W, KVM_PAGE_TRACK_PREWRITE }, + { KVMI_PAGE_ACCESS_X, KVM_PAGE_TRACK_PREEXEC }, +}; + +void kvmi_arch_update_page_tracking(struct kvm *kvm, + struct kvm_memory_slot *slot, + struct...

.../kvm/kvmi.c b/arch/x86/kvm/kvmi.c index 0b1301ebafba..b233a3c5becb 100644 --- a/arch/x86/kvm/kvmi.c +++ b/arch/x86/kvm/kvmi.c @@ -1169,3 +1169,43 @@ bool kvmi_msr_event(struct kvm_vcpu *vcpu, struct msr_data *msr) return ret; } + +static const struct { + unsigned int allow_bit; + enum kvm_page_track_mode track_mode; +} track_modes[] = { + { KVMI_PAGE_ACCESS_R, KVM_PAGE_TRACK_PREREAD }, + { KVMI_PAGE_ACCESS_W, KVM_PAGE_TRACK_PREWRITE }, + { KVMI_PAGE_ACCESS_X, KVM_PAGE_TRACK_PREEXEC }, +}; + +void kvmi_arch_update_page_tracking(struct kvm *kvm, + struct kvm_memory_slot *slot, + struct...

...+ * Thus, we make sure that -wx accesses are translated to rwx. + */ + if ((ret & (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X)) == + (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X)) + ret |= KVMI_PAGE_ACCESS_R; + + return ret; +} + static const struct { unsigned int allow_bit; enum kvm_page_track_mode track_mode; diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index b178b8900660..3481c0247680 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -7183,6 +7183,10 @@ static bool svm_spt_fault(struct kvm_vcpu *vcpu) return (svm->vmcb->control.exit_code == SVM_EXIT_NPF); } +st...

...ed to rwx. > + */ > + if ((ret & (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X)) == > + (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X)) > + ret |= KVMI_PAGE_ACCESS_R; > + > + return ret; > +} > + > static const struct { > unsigned int allow_bit; > enum kvm_page_track_mode track_mode; > diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c > index b178b8900660..3481c0247680 100644 > --- a/arch/x86/kvm/svm.c > +++ b/arch/x86/kvm/svm.c > @@ -7183,6 +7183,10 @@ static bool svm_spt_fault(struct kvm_vcpu *vcpu) > return (svm->vmcb->control.exit_c...

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VM-s (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place

The KVM introspection subsystem provides a facility for applications running on the host or in a separate VM, to control the execution of other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits in the shadow page tables (only for the hardware backed ones, eg. Intel's EPT) and receive notifications when events of interest have taken place