[RFC,v7,74/78] KVM: introspection: add KVMI_VCPU_CONTROL_SINGLESTEP

Message ID	20200207181636.1065-75-alazar@bitdefender.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=xIo7=33=vger.kernel.org=kvm-owner@kernel.org> From: =?utf-8?q?Adalbert_Laz=C4=83r?= <alazar@bitdefender.com> To: kvm@vger.kernel.org Cc: virtualization@lists.linux-foundation.org, Paolo Bonzini <pbonzini@redhat.com>, Sean Christopherson <sean.j.christopherson@intel.com>, =?utf-8?b?TmljdciZ?= =?utf-8?b?b3IgQ8OuyJt1?= <ncitu@bitdefender.com>, =?utf-8?q?Adalbert_Laz?= =?utf-8?q?=C4=83r?= <alazar@bitdefender.com> Subject: [RFC PATCH v7 74/78] KVM: introspection: add KVMI_VCPU_CONTROL_SINGLESTEP Date: Fri, 7 Feb 2020 20:16:32 +0200 Message-Id: <20200207181636.1065-75-alazar@bitdefender.com> In-Reply-To: <20200207181636.1065-1-alazar@bitdefender.com> References: <20200207181636.1065-1-alazar@bitdefender.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: kvm-owner@vger.kernel.org Precedence: bulk
Series	VM introspection \| expand [RFC,v7,00/78] VM introspection [RFC,v7,01/78] sched/swait: add swait_event_killable_exclusive() [RFC,v7,02/78] export kill_pid_info() [RFC,v7,03/78] KVM: add new error codes for VM introspection [RFC,v7,04/78] KVM: add kvm_vcpu_kick_and_wait() [RFC,v7,05/78] KVM: add kvm_get_max_gfn() [RFC,v7,06/78] KVM: doc: fix the hypercall numbering [RFC,v7,07/78] KVM: x86: add kvm_arch_vcpu_get_regs() and kvm_arch_vcpu_get_sregs() [RFC,v7,08/78] KVM: x86: add kvm_arch_vcpu_set_regs() [RFC,v7,09/78] KVM: x86: avoid injecting #PF when emulate the VMCALL instruction [RFC,v7,10/78] KVM: x86: add .bp_intercepted() to struct kvm_x86_ops [RFC,v7,11/78] KVM: x86: add .control_cr3_intercept() to struct kvm_x86_ops [RFC,v7,12/78] KVM: x86: add .cr3_write_intercepted() [RFC,v7,13/78] KVM: x86: add .control_desc_intercept() [RFC,v7,14/78] KVM: x86: add .desc_intercepted() [RFC,v7,15/78] KVM: x86: export .msr_write_intercepted() [RFC,v7,16/78] KVM: x86: use MSR_TYPE_R, MSR_TYPE_W and MSR_TYPE_RW with AMD code too [RFC,v7,17/78] KVM: svm: pass struct kvm_vcpu to set_msr_interception() [RFC,v7,18/78] KVM: vmx: pass struct kvm_vcpu to the intercept msr related functions [RFC,v7,19/78] KVM: x86: add .control_msr_intercept() [RFC,v7,20/78] KVM: x86: vmx: use a symbolic constant when checking the exit qualifications [RFC,v7,21/78] KVM: x86: save the error code during EPT/NPF exits handling [RFC,v7,22/78] KVM: x86: add .fault_gla() [RFC,v7,23/78] KVM: x86: add .spt_fault() [RFC,v7,24/78] KVM: x86: add .gpt_translation_fault() [RFC,v7,25/78] KVM: x86: add .control_singlestep() [RFC,v7,26/78] KVM: x86: export kvm_arch_vcpu_set_guest_debug() [RFC,v7,27/78] KVM: x86: extend kvm_mmu_gva_to_gpa_system() with the 'access' parameter [RFC,v7,28/78] KVM: x86: export kvm_inject_pending_exception() [RFC,v7,29/78] KVM: x86: export kvm_vcpu_ioctl_x86_get_xsave() [RFC,v7,30/78] KVM: x86: page track: provide all page tracking hooks with the guest virtual address [RFC,v7,31/78] KVM: x86: page track: add track_create_slot() callback [RFC,v7,32/78] KVM: x86: page_track: add support for preread, prewrite and preexec [RFC,v7,33/78] KVM: x86: wire in the preread/prewrite/preexec page trackers [RFC,v7,34/78] KVM: x86: intercept the write access on sidt and other emulated instructions [RFC,v7,35/78] KVM: x86: disable gpa_available optimization for fetch and page-walk NPF/EPT violati… [RFC,v7,36/78] KVM: introduce VM introspection [RFC,v7,37/78] KVM: introspection: add hook/unhook ioctls [RFC,v7,38/78] KVM: introspection: add permission access ioctls [RFC,v7,39/78] KVM: introspection: add the read/dispatch message function [RFC,v7,40/78] KVM: introspection: add KVMI_GET_VERSION [RFC,v7,41/78] KVM: introspection: add KVMI_VM_CHECK_COMMAND and KVMI_VM_CHECK_EVENT [RFC,v7,42/78] KVM: introspection: add KVMI_VM_GET_INFO [RFC,v7,43/78] KVM: introspection: add KVMI_EVENT_UNHOOK [RFC,v7,44/78] KVM: introspection: add KVMI_VM_CONTROL_EVENTS [RFC,v7,45/78] KVM: introspection: add KVMI_VM_READ_PHYSICAL/KVMI_VM_WRITE_PHYSICAL [RFC,v7,46/78] KVM: introspection: add vCPU related data [RFC,v7,47/78] KVM: introspection: add a jobs list to every introspected vCPU [RFC,v7,48/78] KVM: introspection: handle vCPU introspection requests [RFC,v7,49/78] KVM: introspection: handle vCPU commands [RFC,v7,50/78] KVM: introspection: add KVMI_VCPU_GET_INFO [RFC,v7,51/78] KVM: introspection: add KVMI_VCPU_PAUSE [RFC,v7,52/78] KVM: introspection: add KVMI_EVENT_PAUSE_VCPU [RFC,v7,53/78] KVM: introspection: add KVMI_VCPU_CONTROL_EVENTS [RFC,v7,54/78] KVM: introspection: add KVMI_VCPU_GET_REGISTERS [RFC,v7,55/78] KVM: introspection: add KVMI_VCPU_SET_REGISTERS [RFC,v7,56/78] KVM: introspection: add KVMI_VCPU_GET_CPUID [RFC,v7,57/78] KVM: introspection: add KVMI_EVENT_HYPERCALL [RFC,v7,58/78] KVM: introspection: add KVMI_EVENT_BREAKPOINT [RFC,v7,59/78] KVM: introspection: restore the state of #BP interception on unhook [RFC,v7,60/78] KVM: introspection: add KVMI_VCPU_CONTROL_CR and KVMI_EVENT_CR [RFC,v7,61/78] KVM: introspection: restore the state of CR3 interception on unhook [RFC,v7,62/78] KVM: introspection: add KVMI_VCPU_INJECT_EXCEPTION + KVMI_EVENT_TRAP [RFC,v7,63/78] KVM: introspection: add KVMI_VM_GET_MAX_GFN [RFC,v7,64/78] KVM: introspection: add KVMI_EVENT_XSETBV [RFC,v7,65/78] KVM: introspection: add KVMI_VCPU_GET_XSAVE [RFC,v7,66/78] KVM: introspection: add KVMI_VCPU_GET_MTRR_TYPE [RFC,v7,67/78] KVM: introspection: add KVMI_EVENT_DESCRIPTOR [RFC,v7,68/78] KVM: introspection: restore the state of descriptor interception on unhook [RFC,v7,69/78] KVM: introspection: add KVMI_VCPU_CONTROL_MSR and KVMI_EVENT_MSR [RFC,v7,70/78] KVM: introspection: restore the state of MSR interception on unhook [RFC,v7,71/78] KVM: introspection: add KVMI_VM_SET_PAGE_ACCESS [RFC,v7,72/78] KVM: introspection: add KVMI_EVENT_PF [RFC,v7,73/78] KVM: introspection: extend KVMI_GET_VERSION with struct kvmi_features [RFC,v7,74/78] KVM: introspection: add KVMI_VCPU_CONTROL_SINGLESTEP [RFC,v7,75/78] KVM: introspection: add KVMI_EVENT_SINGLESTEP [RFC,v7,76/78] KVM: introspection: add KVMI_VCPU_TRANSLATE_GVA [RFC,v7,77/78] KVM: introspection: emulate a guest page table walk on SPT violations due to A/D bit… [RFC,v7,78/78] KVM: x86: call the page tracking code on emulation failure

diff --git a/Documentation/virt/kvm/kvmi.rst b/Documentation/virt/kvm/kvmi.rst index 454d7ae75ae6..ffa183745722 100644 --- a/Documentation/virt/kvm/kvmi.rst +++ b/Documentation/virt/kvm/kvmi.rst @@ -930,6 +930,37 @@ In order to 'forget' an address, all the access bits ('rwx') must be set. * -KVM_EINVAL - the message size is invalid * -KVM_ENOMEM - not enough memory to add the page tracking structures +20. KVMI_VCPU_CONTROL_SINGLESTEP +-------------------------------- + +:Architectures: x86 (vmx) +:Versions: >= 1 +:Parameters: + +:: + + struct kvmi_vcpu_control_singlestep { + __u8 enable; + __u8 padding[7]; + }; + +:Returns: + +:: + + struct kvmi_error_code + +Enables/disables singlestep. + +The introspection tool can use *KVMI_GET_VERSION*, to check +if the hardware supports singlestep (see **KVMI_GET_VERSION**). + +:Errors: + +* -KVM_EOPNOTSUPP - the hardware doesn't support it +* -KVM_EINVAL - padding is not zero +* -KVM_EAGAIN - the selected vCPU can't be introspected yet + Events ====== diff --git a/arch/x86/kvm/kvmi.c b/arch/x86/kvm/kvmi.c index 5cf266d13375..feebb0327e27 100644 --- a/arch/x86/kvm/kvmi.c +++ b/arch/x86/kvm/kvmi.c @@ -1111,3 +1111,21 @@ bool kvmi_arch_pf_of_interest(struct kvm_vcpu *vcpu) !kvm_x86_ops->gpt_translation_fault(vcpu); } +bool kvmi_arch_start_singlestep(struct kvm_vcpu *vcpu) +{ + if (!kvm_x86_ops->control_singlestep) + return false; + + kvm_x86_ops->control_singlestep(vcpu, true); + return true; +} + +bool kvmi_arch_stop_singlestep(struct kvm_vcpu *vcpu) +{ + if (!kvm_x86_ops->control_singlestep) + return false; + + kvm_x86_ops->control_singlestep(vcpu, false); + return true; +} + diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5d6ac6c99246..b87ff31ce486 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7625,6 +7625,13 @@ static int inject_pending_event(struct kvm_vcpu *vcpu, bool req_int_win) { int r; + if (kvmi_vcpu_running_singlestep(vcpu)) + /* + * We cannot inject events during single-stepping. + * Try again later. + */ + return -1; + /* try to reinject previous events if any */ if (vcpu->arch.exception.injected) diff --git a/include/linux/kvmi_host.h b/include/linux/kvmi_host.h index a9f572df1809..7c84ca681411 100644 --- a/include/linux/kvmi_host.h +++ b/include/linux/kvmi_host.h @@ -50,6 +50,10 @@ struct kvm_vcpu_introspection { bool pending; bool send_event; } exception; + + struct { + bool loop; + } singlestep; }; struct kvm_introspection { @@ -90,6 +94,7 @@ void kvmi_handle_requests(struct kvm_vcpu *vcpu); bool kvmi_hypercall_event(struct kvm_vcpu *vcpu); bool kvmi_breakpoint_event(struct kvm_vcpu *vcpu, u64 gva, u8 insn_len); bool kvmi_enter_guest(struct kvm_vcpu *vcpu); +bool kvmi_vcpu_running_singlestep(struct kvm_vcpu *vcpu); #else @@ -106,6 +111,8 @@ static inline bool kvmi_breakpoint_event(struct kvm_vcpu *vcpu, u64 gva, { return true; } static inline bool kvmi_enter_guest(struct kvm_vcpu *vcpu) { return true; } +static inline bool kvmi_vcpu_running_singlestep(struct kvm_vcpu *vcpu) + { return false; } #endif /* CONFIG_KVM_INTROSPECTION */ diff --git a/include/uapi/linux/kvmi.h b/include/uapi/linux/kvmi.h index 7cd41a815967..c6c5019ccf85 100644 --- a/include/uapi/linux/kvmi.h +++ b/include/uapi/linux/kvmi.h @@ -43,6 +43,8 @@ enum { KVMI_VM_SET_PAGE_ACCESS = 21, + KVMI_VCPU_CONTROL_SINGLESTEP = 22, + KVMI_NUM_MESSAGES }; @@ -168,6 +170,11 @@ struct kvmi_vm_set_page_access { struct kvmi_page_access_entry entries[0]; }; +struct kvmi_vcpu_control_singlestep { + __u8 enable; + __u8 padding[7]; +}; + struct kvmi_event { __u16 size; __u16 vcpu; diff --git a/tools/testing/selftests/kvm/x86_64/kvmi_test.c b/tools/testing/selftests/kvm/x86_64/kvmi_test.c index a27588c27eb8..090cb7acd2ed 100644 --- a/tools/testing/selftests/kvm/x86_64/kvmi_test.c +++ b/tools/testing/selftests/kvm/x86_64/kvmi_test.c @@ -1681,6 +1681,26 @@ static void test_event_pf(struct kvm_vm *vm) test_pf(vm, cbk_test_event_pf); } +static void test_cmd_vcpu_control_singlestep(struct kvm_vm *vm) +{ + struct { + struct kvmi_msg_hdr hdr; + struct kvmi_vcpu_hdr vcpu_hdr; + struct kvmi_vcpu_control_singlestep cmd; + } req = {}; + + if (!features.singlestep) + return; + + req.cmd.enable = true; + test_vcpu0_command(vm, KVMI_VCPU_CONTROL_SINGLESTEP, + &req.hdr, sizeof(req), NULL, 0); + + req.cmd.enable = false; + test_vcpu0_command(vm, KVMI_VCPU_CONTROL_SINGLESTEP, + &req.hdr, sizeof(req), NULL, 0); +} + static void test_introspection(struct kvm_vm *vm) { setup_socket(); @@ -1712,6 +1732,7 @@ static void test_introspection(struct kvm_vm *vm) test_cmd_vcpu_control_msr(vm); test_cmd_vm_set_page_access(vm); test_event_pf(vm); + test_cmd_vcpu_control_singlestep(vm); unhook_introspection(vm); } diff --git a/virt/kvm/introspection/kvmi.c b/virt/kvm/introspection/kvmi.c index 10d59061fa82..b798eeab6618 100644 --- a/virt/kvm/introspection/kvmi.c +++ b/virt/kvm/introspection/kvmi.c @@ -361,6 +361,9 @@ static void kvmi_job_release_vcpu(struct kvm_vcpu *vcpu, void *ctx) atomic_set(&vcpui->pause_requests, 0); vcpui->waiting_for_reply = false; + + if (vcpui->singlestep.loop) + kvmi_arch_stop_singlestep(vcpu); } static void kvmi_release_vcpus(struct kvm *kvm) @@ -1003,6 +1006,9 @@ bool kvmi_enter_guest(struct kvm_vcpu *vcpu) if (!kvmi) return true; + if (VCPUI(vcpu)->singlestep.loop) + kvmi_arch_start_singlestep(vcpu); + if (kvmi_inject_pending_exception(vcpu)) r = false; @@ -1296,3 +1302,20 @@ static void kvmi_track_flush_slot(struct kvm *kvm, struct kvm_memory_slot *slot, kvmi_put(kvm); } + +bool kvmi_vcpu_running_singlestep(struct kvm_vcpu *vcpu) +{ + struct kvm_introspection *kvmi; + bool ret; + + kvmi = kvmi_get(vcpu->kvm); + if (!kvmi) + return false; + + ret = VCPUI(vcpu)->singlestep.loop; + + kvmi_put(vcpu->kvm); + + return ret; +} +EXPORT_SYMBOL(kvmi_vcpu_running_singlestep); diff --git a/virt/kvm/introspection/kvmi_int.h b/virt/kvm/introspection/kvmi_int.h index 06b924277f37..64425ff16c7d 100644 --- a/virt/kvm/introspection/kvmi_int.h +++ b/virt/kvm/introspection/kvmi_int.h @@ -50,6 +50,7 @@ | BIT(KVMI_VCPU_CONTROL_CR) \ | BIT(KVMI_VCPU_CONTROL_EVENTS) \ | BIT(KVMI_VCPU_CONTROL_MSR) \ + | BIT(KVMI_VCPU_CONTROL_SINGLESTEP) \ | BIT(KVMI_VCPU_GET_CPUID) \ | BIT(KVMI_VCPU_GET_MTRR_TYPE) \ | BIT(KVMI_VCPU_GET_REGISTERS) \ @@ -168,5 +169,7 @@ bool kvmi_arch_pf_event(struct kvm_vcpu *vcpu, gpa_t gpa, gva_t gva, u8 access); bool kvmi_arch_pf_of_interest(struct kvm_vcpu *vcpu); void kvmi_arch_features(struct kvmi_features *feat); +bool kvmi_arch_start_singlestep(struct kvm_vcpu *vcpu); +bool kvmi_arch_stop_singlestep(struct kvm_vcpu *vcpu); #endif diff --git a/virt/kvm/introspection/kvmi_msg.c b/virt/kvm/introspection/kvmi_msg.c index 8c7cdbd96faa..4c49033a6407 100644 --- a/virt/kvm/introspection/kvmi_msg.c +++ b/virt/kvm/introspection/kvmi_msg.c @@ -17,27 +17,28 @@ struct kvmi_vcpu_cmd_job { }; static const char *const msg_IDs[] = { - [KVMI_EVENT_REPLY] = "KVMI_EVENT_REPLY", - [KVMI_GET_VERSION] = "KVMI_GET_VERSION", - [KVMI_VM_CHECK_COMMAND] = "KVMI_VM_CHECK_COMMAND", - [KVMI_VM_CHECK_EVENT] = "KVMI_VM_CHECK_EVENT", - [KVMI_VM_CONTROL_EVENTS] = "KVMI_VM_CONTROL_EVENTS", - [KVMI_VM_GET_INFO] = "KVMI_VM_GET_INFO", - [KVMI_VM_GET_MAX_GFN] = "KVMI_VM_GET_MAX_GFN", - [KVMI_VM_READ_PHYSICAL] = "KVMI_VM_READ_PHYSICAL", - [KVMI_VM_SET_PAGE_ACCESS] = "KVMI_VM_SET_PAGE_ACCESS", - [KVMI_VM_WRITE_PHYSICAL] = "KVMI_VM_WRITE_PHYSICAL", - [KVMI_VCPU_CONTROL_CR] = "KVMI_VCPU_CONTROL_CR", - [KVMI_VCPU_CONTROL_EVENTS] = "KVMI_VCPU_CONTROL_EVENTS", - [KVMI_VCPU_CONTROL_MSR] = "KVMI_VCPU_CONTROL_MSR", - [KVMI_VCPU_GET_CPUID] = "KVMI_VCPU_GET_CPUID", - [KVMI_VCPU_GET_INFO] = "KVMI_VCPU_GET_INFO", - [KVMI_VCPU_GET_MTRR_TYPE] = "KVMI_VCPU_GET_MTRR_TYPE", - [KVMI_VCPU_GET_REGISTERS] = "KVMI_VCPU_GET_REGISTERS", - [KVMI_VCPU_GET_XSAVE] = "KVMI_VCPU_GET_XSAVE", - [KVMI_VCPU_INJECT_EXCEPTION] = "KVMI_VCPU_INJECT_EXCEPTION", - [KVMI_VCPU_PAUSE] = "KVMI_VCPU_PAUSE", - [KVMI_VCPU_SET_REGISTERS] = "KVMI_VCPU_SET_REGISTERS", + [KVMI_EVENT_REPLY] = "KVMI_EVENT_REPLY", + [KVMI_GET_VERSION] = "KVMI_GET_VERSION", + [KVMI_VM_CHECK_COMMAND] = "KVMI_VM_CHECK_COMMAND", + [KVMI_VM_CHECK_EVENT] = "KVMI_VM_CHECK_EVENT", + [KVMI_VM_CONTROL_EVENTS] = "KVMI_VM_CONTROL_EVENTS", + [KVMI_VM_GET_INFO] = "KVMI_VM_GET_INFO", + [KVMI_VM_GET_MAX_GFN] = "KVMI_VM_GET_MAX_GFN", + [KVMI_VM_READ_PHYSICAL] = "KVMI_VM_READ_PHYSICAL", + [KVMI_VM_SET_PAGE_ACCESS] = "KVMI_VM_SET_PAGE_ACCESS", + [KVMI_VM_WRITE_PHYSICAL] = "KVMI_VM_WRITE_PHYSICAL", + [KVMI_VCPU_CONTROL_CR] = "KVMI_VCPU_CONTROL_CR", + [KVMI_VCPU_CONTROL_EVENTS] = "KVMI_VCPU_CONTROL_EVENTS", + [KVMI_VCPU_CONTROL_MSR] = "KVMI_VCPU_CONTROL_MSR", + [KVMI_VCPU_CONTROL_SINGLESTEP] = "KVMI_VCPU_CONTROL_SINGLESTEP", + [KVMI_VCPU_GET_CPUID] = "KVMI_VCPU_GET_CPUID", + [KVMI_VCPU_GET_INFO] = "KVMI_VCPU_GET_INFO", + [KVMI_VCPU_GET_MTRR_TYPE] = "KVMI_VCPU_GET_MTRR_TYPE", + [KVMI_VCPU_GET_REGISTERS] = "KVMI_VCPU_GET_REGISTERS", + [KVMI_VCPU_GET_XSAVE] = "KVMI_VCPU_GET_XSAVE", + [KVMI_VCPU_INJECT_EXCEPTION] = "KVMI_VCPU_INJECT_EXCEPTION", + [KVMI_VCPU_PAUSE] = "KVMI_VCPU_PAUSE", + [KVMI_VCPU_SET_REGISTERS] = "KVMI_VCPU_SET_REGISTERS", }; static bool is_known_message(u16 id) @@ -585,6 +586,34 @@ static int handle_vcpu_control_msr(const struct kvmi_vcpu_cmd_job *job, return kvmi_msg_vcpu_reply(job, msg, ec, NULL, 0); } +static int handle_vcpu_control_singlestep(const struct kvmi_vcpu_cmd_job *job, + const struct kvmi_msg_hdr *msg, + const void *_req) +{ + const struct kvmi_vcpu_control_singlestep *req = _req; + struct kvm_vcpu *vcpu = job->vcpu; + int ec = -KVM_EINVAL; + bool done; + int i; + + for (i = 0; i < sizeof(req->padding); i++) + if (req->padding[i]) + goto reply; + + if (req->enable) + done = kvmi_arch_start_singlestep(vcpu); + else + done = kvmi_arch_stop_singlestep(vcpu); + + if (done) { + ec = 0; + VCPUI(vcpu)->singlestep.loop = !!req->enable; + } + +reply: + return kvmi_msg_vcpu_reply(job, msg, ec, NULL, 0); +} + /* * These commands are executed on the vCPU thread. The receiving thread * passes the messages using a newly allocated 'struct kvmi_vcpu_cmd_job' @@ -593,17 +622,18 @@ static int handle_vcpu_control_msr(const struct kvmi_vcpu_cmd_job *job, */ static int(*const msg_vcpu[])(const struct kvmi_vcpu_cmd_job *, const struct kvmi_msg_hdr *, const void *) = { - [KVMI_EVENT_REPLY] = handle_event_reply, - [KVMI_VCPU_CONTROL_CR] = handle_vcpu_control_cr, - [KVMI_VCPU_CONTROL_EVENTS] = handle_vcpu_control_events, - [KVMI_VCPU_CONTROL_MSR] = handle_vcpu_control_msr, - [KVMI_VCPU_GET_CPUID] = handle_get_cpuid, - [KVMI_VCPU_GET_INFO] = handle_get_vcpu_info, - [KVMI_VCPU_GET_MTRR_TYPE] = handle_vcpu_get_mtrr_type, - [KVMI_VCPU_GET_REGISTERS] = handle_get_registers, - [KVMI_VCPU_GET_XSAVE] = handle_vcpu_get_xsave, - [KVMI_VCPU_INJECT_EXCEPTION] = handle_vcpu_inject_exception, - [KVMI_VCPU_SET_REGISTERS] = handle_set_registers, + [KVMI_EVENT_REPLY] = handle_event_reply, + [KVMI_VCPU_CONTROL_CR] = handle_vcpu_control_cr, + [KVMI_VCPU_CONTROL_EVENTS] = handle_vcpu_control_events, + [KVMI_VCPU_CONTROL_MSR] = handle_vcpu_control_msr, + [KVMI_VCPU_CONTROL_SINGLESTEP] = handle_vcpu_control_singlestep, + [KVMI_VCPU_GET_CPUID] = handle_get_cpuid, + [KVMI_VCPU_GET_INFO] = handle_get_vcpu_info, + [KVMI_VCPU_GET_MTRR_TYPE] = handle_vcpu_get_mtrr_type, + [KVMI_VCPU_GET_REGISTERS] = handle_get_registers, + [KVMI_VCPU_GET_XSAVE] = handle_vcpu_get_xsave, + [KVMI_VCPU_INJECT_EXCEPTION] = handle_vcpu_inject_exception, + [KVMI_VCPU_SET_REGISTERS] = handle_set_registers, }; static void kvmi_job_vcpu_cmd(struct kvm_vcpu *vcpu, void *ctx)

[RFC,v7,74/78] KVM: introspection: add KVMI_VCPU_CONTROL_SINGLESTEP

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