search for: kvmi_arch_request_restore_intercept

..._ONCE(vcpu->arch.kvmi, arch_vcpui); + + return true; +} + +void kvmi_arch_vcpu_free(struct kvm_vcpu *vcpu) +{ + kfree(vcpu->arch.kvmi); + WRITE_ONCE(vcpu->arch.kvmi, NULL); +} + +bool kvmi_arch_vcpu_introspected(struct kvm_vcpu *vcpu) +{ + return !!READ_ONCE(vcpu->arch.kvmi); +} + +void kvmi_arch_request_restore_interception(struct kvm_vcpu *vcpu) +{ + struct kvmi_interception *arch_vcpui = READ_ONCE(vcpu->arch.kvmi); + + if (arch_vcpui) + arch_vcpui->restore_interception = true; } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index b4a7805ce9e4..a3afbbb7199f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch...

...4 old_value; + __u64 new_value; +}; + +struct kvmi_event_cr_reply { + __u64 new_val; +}; + #endif /* _UAPI_ASM_X86_KVMI_H */ diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c index 54abaf416ff3..9917295e9a56 100644 --- a/arch/x86/kvm/kvmi.c +++ b/arch/x86/kvm/kvmi.c @@ -341,3 +341,115 @@ void kvmi_arch_request_restore_interception(struct kvm_vcpu *vcpu) if (arch_vcpui) arch_vcpui->restore_interception = true; } + +int kvmi_arch_cmd_vcpu_control_cr(struct kvm_vcpu *vcpu, + const struct kvmi_vcpu_control_cr *req) +{ + u32 cr = req->cr; + + if (req->padding1 || req->padding2 || cr >= KVMI_NUM_CR) +...

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