Displaying 7 results from an estimated 7 matches for "kvmi_run_jobs_and_wait".
2019 Aug 13
1
[RFC PATCH v6 13/92] kvm: introspection: make the vCPU wait even when its jobs list is empty
On 09/08/19 17:59, Adalbert Laz?r wrote:
> +void kvmi_handle_requests(struct kvm_vcpu *vcpu)
> +{
> + struct kvmi *ikvm;
> +
> + ikvm = kvmi_get(vcpu->kvm);
> + if (!ikvm)
> + return;
> +
> + for (;;) {
> + int err = kvmi_run_jobs_and_wait(vcpu);
> +
> + if (err)
> + break;
> + }
> +
> + kvmi_put(vcpu->kvm);
> +}
> +
Using kvmi_run_jobs_and_wait from two places (here and kvmi_send_event)
is very confusing. Does kvmi_handle_requests need to do this, or can it
just use kvmi_run_jobs?
Paolo
2019 Aug 09
0
[RFC PATCH v6 13/92] kvm: introspection: make the vCPU wait even when its jobs list is empty
...>job_list);
+}
+
+static void kvmi_job_wait(struct kvm_vcpu *vcpu, void *ctx)
+{
+ struct swait_queue_head *wq = kvm_arch_vcpu_wq(vcpu);
+ struct kvmi_vcpu *ivcpu = IVCPU(vcpu);
+ int err;
+
+ err = swait_event_killable(*wq, done_waiting(vcpu));
+
+ if (err)
+ ivcpu->killed = true;
+}
+
+int kvmi_run_jobs_and_wait(struct kvm_vcpu *vcpu)
+{
+ struct kvmi_vcpu *ivcpu = IVCPU(vcpu);
+ int err = 0;
+
+ for (;;) {
+ kvmi_run_jobs(vcpu);
+
+ if (ivcpu->killed) {
+ err = -1;
+ break;
+ }
+
+ kvmi_add_job(vcpu, kvmi_job_wait, NULL, NULL);
+ }
+
+ return err;
+}
+
+void kvmi_handle_requests(struct kvm_vcpu...
2019 Aug 09
0
[RFC PATCH v6 16/92] kvm: introspection: handle events and event replies
...{
+ struct kvmi_vcpu *ivcpu = IVCPU(vcpu);
+
+ return ivcpu->reply_waiting;
+}
+
static bool done_waiting(struct kvm_vcpu *vcpu)
{
struct kvmi_vcpu *ivcpu = IVCPU(vcpu);
+ if (!need_to_wait(vcpu))
+ return true;
+
return !list_empty(&ivcpu->job_list);
}
@@ -552,6 +564,9 @@ int kvmi_run_jobs_and_wait(struct kvm_vcpu *vcpu)
break;
}
+ if (!need_to_wait(vcpu))
+ break;
+
kvmi_add_job(vcpu, kvmi_job_wait, NULL, NULL);
}
diff --git a/virt/kvm/kvmi_int.h b/virt/kvm/kvmi_int.h
index 33ea05cb99af..70c8ca0343a3 100644
--- a/virt/kvm/kvmi_int.h
+++ b/virt/kvm/kvmi_int.h
@@ -82,7 +82,1...
2019 Aug 09
0
[RFC PATCH v6 64/92] kvm: introspection: add single-stepping
...+
+ new_access = kvmi_arch_relax_page_access(old_access, access);
+
+ kvmi_set_gfn_access(vcpu->kvm, gfn, new_access, old_write_bitmap);
+
+ return true;
+}
+
+bool kvmi_start_ss(struct kvm_vcpu *vcpu, gpa_t gpa, u8 access)
+{
+ bool ret = false;
+
+ while (!kvmi_acquire_ss(vcpu)) {
+ int err = kvmi_run_jobs_and_wait(vcpu);
+
+ if (err) {
+ kvmi_err(IKVM(vcpu->kvm), "kvmi_acquire_ss() has failed\n");
+ goto out;
+ }
+ }
+
+ if (kvmi_run_ss(vcpu, gpa, access))
+ ret = true;
+ else
+ kvmi_stop_ss(vcpu);
+
+out:
+ return ret;
+}
+
+bool kvmi_vcpu_enabled_ss(struct kvm_vcpu *vcpu)
+{
+ struct k...
2019 Aug 12
1
[RFC PATCH v6 64/92] kvm: introspection: add single-stepping
...ess);
> +
> + kvmi_set_gfn_access(vcpu->kvm, gfn, new_access, old_write_bitmap);
> +
> + return true;
> +}
> +
> +bool kvmi_start_ss(struct kvm_vcpu *vcpu, gpa_t gpa, u8 access)
> +{
> + bool ret = false;
> +
> + while (!kvmi_acquire_ss(vcpu)) {
> + int err = kvmi_run_jobs_and_wait(vcpu);
> +
> + if (err) {
> + kvmi_err(IKVM(vcpu->kvm), "kvmi_acquire_ss() has failed\n");
> + goto out;
> + }
> + }
> +
> + if (kvmi_run_ss(vcpu, gpa, access))
> + ret = true;
> + else
> + kvmi_stop_ss(vcpu);
> +
> +out:
> + return ret...
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