search for: kvm_arch_vcpu_get_sregs

...pu *vcpu, struct kvm_regs *regs) +{ + __get_regs(vcpu, regs); +} + static void __set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) { vcpu->arch.emulate_regs_need_sync_from_vcpu = true; @@ -8710,6 +8715,11 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, return 0; } +void kvm_arch_vcpu_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) +{ + __get_sregs(vcpu, sregs); +} + int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, struct kvm_mp_state *mp_state) { diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e826e874b998..62f5bf82adc0 100644 --- a/i...

...a; + + msr.index = MSR_KERNEL_GS_BASE; + kvm_get_msr(vcpu, &msr); + event->msrs.shadow_gs = msr.data; +} + +void kvmi_arch_setup_event(struct kvm_vcpu *vcpu, struct kvmi_event *ev) +{ + struct kvmi_event_arch *event = &ev->arch; + + kvm_arch_vcpu_get_regs(vcpu, &event->regs); + kvm_arch_vcpu_get_sregs(vcpu, &event->sregs); + ev->arch.mode = kvmi_vcpu_mode(vcpu, &event->sregs); + kvmi_get_msrs(vcpu, event); +} diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index adbdb1ceb618..30cf0d162aa8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -8244,6 +8244,11 @@ int kv...

...vm_regs *regs); int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); +void kvm_arch_vcpu_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs, + bool clear_exception); int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); void kvm_arch_vcpu_get_sregs(struct kvm_vcpu *vcpu,

...vm_regs *regs); int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); +void kvm_arch_vcpu_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs, + bool clear_exception); int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); void kvm_arch_vcpu_get_sregs(struct kvm_vcpu *vcpu,

...vm_vcpu *vcpu, u32 *mode, + struct kvm_regs *regs, + struct kvm_sregs *sregs, + struct kvm_msrs *msrs) +{ + struct kvm_msr_entry *msr = msrs->entries; + struct kvm_msr_entry *end = msrs->entries + msrs->nmsrs; + int err = 0; + + kvm_arch_vcpu_get_regs(vcpu, regs); + kvm_arch_vcpu_get_sregs(vcpu, sregs); + *mode = kvmi_vcpu_mode(vcpu, sregs); + + for (; msr < end && !err; msr++) + err = __kvm_get_msr(vcpu, msr->index, &msr->data, true); + + return err ? -KVM_EINVAL : 0; +} + +int kvmi_arch_cmd_vcpu_get_registers(struct kvm_vcpu *vcpu, + const struct kvmi_msg_h...

...egs *regs, + struct kvm_sregs *sregs, + struct kvm_msrs *msrs) +{ + struct kvm_msr_entry *msr = msrs->entries; + struct kvm_msr_entry *end = msrs->entries + msrs->nmsrs; + struct msr_data m = {.host_initiated = true}; + int err = 0; + + kvm_arch_vcpu_get_regs(vcpu, regs); + kvm_arch_vcpu_get_sregs(vcpu, sregs); + *mode = kvmi_vcpu_mode(vcpu, sregs); + + for (; msr < end && !err; msr++) { + m.index = msr->index; + + err = kvm_x86_ops.get_msr(vcpu, &m); + + if (!err) + msr->data = m.data; + } + + return err ? -KVM_EINVAL : 0; +} + +static bool valid_reply_size(size_t...

...T, &ev->msrs.pat, true); + __kvm_get_msr(vcpu, MSR_KERNEL_GS_BASE, &ev->msrs.shadow_gs, true); +} + +void kvmi_arch_setup_event(struct kvm_vcpu *vcpu, struct kvmi_event *ev) +{ + struct kvmi_event_arch *event = &ev->arch; + + kvm_arch_vcpu_get_regs(vcpu, &event->regs); + kvm_arch_vcpu_get_sregs(vcpu, &event->sregs); + ev->arch.mode = kvmi_vcpu_mode(vcpu, &event->sregs); + kvmi_get_msrs(vcpu, event); +} + int kvmi_arch_cmd_vcpu_get_info(struct kvm_vcpu *vcpu, struct kvmi_vcpu_get_info_reply *rpl) { diff --git a/include/linux/kvmi_host.h b/include/linux/kvmi_host.h i...

...introspection: extend KVMI_GET_VERSION with struct kvmi_features KVM: introspection: add KVMI_VCPU_TRANSLATE_GVA Marian Rotariu (1): KVM: introspection: add KVMI_VCPU_GET_CPUID Mathieu Tarral (1): signal: export kill_pid_info() Mihai Don?u (35): KVM: x86: add kvm_arch_vcpu_get_regs() and kvm_arch_vcpu_get_sregs() KVM: x86: avoid injecting #PF when emulate the VMCALL instruction KVM: x86: add .control_msr_intercept() KVM: x86: vmx: use a symbolic constant when checking the exit qualifications KVM: x86: save the error code during EPT/NPF exits handling KVM: x86: add .fault_gla() KVM: x86: ad...

...KVM: introspection: extend KVMI_GET_VERSION with struct kvmi_features KVM: introspection: add KVMI_VCPU_TRANSLATE_GVA Marian Rotariu (1): KVM: introspection: add KVMI_VCPU_GET_CPUID Mathieu Tarral (1): export kill_pid_info() Mihai Don?u (34): KVM: x86: add kvm_arch_vcpu_get_regs() and kvm_arch_vcpu_get_sregs() KVM: x86: avoid injecting #PF when emulate the VMCALL instruction KVM: x86: add .control_msr_intercept() KVM: x86: vmx: use a symbolic constant when checking the exit qualifications KVM: x86: save the error code during EPT/NPF exits handling KVM: x86: add .fault_gla() KVM: x86: ad...

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

This patch series is based on the VM introspection patches (https://lore.kernel.org/kvm/20200721210922.7646-1-alazar at bitdefender.com/), extending the introspection API with EPT Views and Virtualization Exceptions (#VE) support. The purpose of this series is to get an initial feedback and to see if we are on the right track, especially because the changes made to add the EPT views are not small