Displaying 10 results from an estimated 10 matches for "kvm_enoent".
2020 Jul 21
0
[PATCH v9 42/84] KVM: introspection: add KVMI_VM_CHECK_COMMAND and KVMI_VM_CHECK_EVENT
...Versions: >= 1
+:Parameters:
+
+::
+
+ struct kvmi_vm_check_command {
+ __u16 id;
+ __u16 padding1;
+ __u32 padding2;
+ };
+
+:Returns:
+
+::
+
+ struct kvmi_error_code;
+
+Checks if the command specified by ``id`` is supported and allowed.
+
+This command is always allowed.
+
+:Errors:
+
+* -KVM_ENOENT - the command specified by ``id`` is unsupported
+* -KVM_EPERM - the command specified by ``id`` is disallowed
+* -KVM_EINVAL - the padding is not zero
+
+3. KVMI_VM_CHECK_EVENT
+----------------------
+
+:Architectures: all
+:Versions: >= 1
+:Parameters:
+
+::
+
+ struct kvmi_vm_check_event {
+...
2020 Jul 21
0
[PATCH v9 58/84] KVM: introspection: add KVMI_VCPU_GET_CPUID
...get_cpuid_reply {
+ __u32 eax;
+ __u32 ebx;
+ __u32 ecx;
+ __u32 edx;
+ };
+
+Returns a CPUID leaf (as seen by the guest OS).
+
+:Errors:
+
+* -KVM_EINVAL - the selected vCPU is invalid
+* -KVM_EINVAL - the padding is not zero
+* -KVM_EAGAIN - the selected vCPU can't be introspected yet
+* -KVM_ENOENT - the selected leaf is not present or is invalid
+
Events
======
diff --git a/arch/x86/include/uapi/asm/kvmi.h b/arch/x86/include/uapi/asm/kvmi.h
index f14674c3c109..57c48ace417f 100644
--- a/arch/x86/include/uapi/asm/kvmi.h
+++ b/arch/x86/include/uapi/asm/kvmi.h
@@ -45,4 +45,16 @@ struct kvmi_...
2020 Feb 07
0
[RFC PATCH v7 03/78] KVM: add new error codes for VM introspection
...e/uapi/linux/kvm_para.h b/include/uapi/linux/kvm_para.h
index 8b86609849b9..3ce388249682 100644
--- a/include/uapi/linux/kvm_para.h
+++ b/include/uapi/linux/kvm_para.h
@@ -17,6 +17,10 @@
#define KVM_E2BIG E2BIG
#define KVM_EPERM EPERM
#define KVM_EOPNOTSUPP 95
+#define KVM_EAGAIN 11
+#define KVM_ENOENT ENOENT
+#define KVM_ENOMEM ENOMEM
+#define KVM_EBUSY EBUSY
#define KVM_HC_VAPIC_POLL_IRQ 1
#define KVM_HC_MMU_OP 2
2020 Jul 21
0
[PATCH v9 50/84] KVM: introspection: handle vCPU commands
...onst void *req)
{
@@ -120,7 +151,7 @@ static int handle_vm_check_command(struct kvm_introspection *kvmi,
if (req->padding1 || req->padding2)
ec = -KVM_EINVAL;
- else if (!is_vm_command(req->id))
+ else if (!is_vm_command(req->id) && !is_vcpu_command(req->id))
ec = -KVM_ENOENT;
else if (!kvmi_is_command_allowed(kvmi, req->id))
ec = -KVM_EPERM;
@@ -243,6 +274,60 @@ static bool is_vm_command(u16 id)
return id < ARRAY_SIZE(msg_vm) && !!msg_vm[id];
}
+/*
+ * These functions are executed from the vCPU thread. The receiving thread
+ * passes the message...
2020 Jul 21
0
[PATCH v9 44/84] KVM: introspection: add KVMI_EVENT_UNHOOK
...event(void)
+static void test_cmd_vm_check_event(struct kvm_vm *vm)
{
- __u16 invalid_id = 0xffff;
+ __u16 valid_id = KVMI_EVENT_UNHOOK, invalid_id = 0xffff;
__u16 padding = 1, no_padding = 0;
cmd_vm_check_event(invalid_id, padding, -KVM_EINVAL);
cmd_vm_check_event(invalid_id, no_padding, -KVM_ENOENT);
+
+ cmd_vm_check_event(valid_id, no_padding, 0);
+ cmd_vm_check_event(valid_id, padding, -KVM_EINVAL);
+
+ disallow_event(vm, valid_id);
+ cmd_vm_check_event(valid_id, 0, -KVM_EPERM);
+ allow_event(vm, valid_id);
}
static void test_cmd_vm_get_info(void)
@@ -323,6 +335,52 @@ static void test_c...
2020 Feb 07
0
[RFC PATCH v7 60/78] KVM: introspection: add KVMI_VCPU_CONTROL_CR and KVMI_EVENT_CR
...h
the following events::
KVMI_EVENT_BREAKPOINT
+ KVMI_EVENT_CR
KVMI_EVENT_HYPERCALL
When an event is enabled, the introspection tool is notified and it
@@ -658,6 +659,41 @@ Returns a CPUID leaf (as seen by the guest OS).
* -KVM_EAGAIN - the selected vCPU can't be introspected yet
* -KVM_ENOENT - the selected leaf is not present or is invalid
+14. KVMI_VCPU_CONTROL_CR
+------------------------
+
+:Architectures: x86
+:Versions: >= 1
+:Parameters:
+
+::
+
+ struct kvmi_vcpu_hdr;
+ struct kvmi_vcpu_control_cr {
+ __u8 enable;
+ __u8 padding1;
+ __u16 padding2;
+ __u32 cr;
+ };
+
+:...
2020 Jul 21
87
[PATCH v9 00/84] VM introspection
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
2020 Feb 07
78
[RFC PATCH v7 00/78] VM introspection
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
2019 Aug 09
117
[RFC PATCH v6 00/92] VM introspection
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
2019 Aug 09
117
[RFC PATCH v6 00/92] VM introspection
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