Re: [Qemu-devel] kill /destroy a VM - help

[Paolo Bonzini]

Il 06/03/2014 11:31, Alexander Binun ha scritto:
> Then - more questions :
>    1. How can I access the Qemu process (relevant to a given VM) from within in 
> the kernel context (being in a kernel module) ?

The struct pid for the VCPU is in the "pid" field of struct kvm_vcpu.

From there if needed you can get the task (with pid_task) and the 
task's thread group leader (the task's group_leader), and send a signal 
to it.

>    2. Should I uninitialize some internal structures for the VM being killed ?

No, it will happen automatically.  When QEMU is terminated, the VM's 
file descriptor is closed and this frees all internal structures.

>    3. My module detects malicious activities at a VCPU. How can one get the VM 
> owning this VCPU ?

Field "kvm" in struct kvm_vcpu points to the struct kvm for the VM.

Paolo