Displaying 6 results from an estimated 6 matches for "mmu_set_spte".
2019 Aug 13
1
[RFC PATCH v6 14/92] kvm: introspection: handle introspection commands before returning to guest
On 09/08/19 17:59, Adalbert Laz?r wrote:
> + prepare_to_swait_exclusive(&vcpu->wq, &wait,
> + TASK_INTERRUPTIBLE);
> +
> + if (kvm_vcpu_check_block(vcpu) < 0)
> + break;
> +
> + waited = true;
> + schedule();
> +
> + if (kvm_check_request(KVM_REQ_INTROSPECTION, vcpu)) {
> + do_kvmi_work = true;
> + break;
> + }
>
2019 Aug 13
0
[RFC PATCH v6 14/92] kvm: introspection: handle introspection commands before returning to guest
...can happen for a non-boot vCPU to start executing code from areas that
> first needed to be set up by vCPU #0.
>
> In a particular case, vCPU #1 executed code which resided in an area
> not covered by a memslot, which caused an EPT violation that got
> turned in mmu_set_spte() into a MMIO request that required emulation.
> Unfortunatelly, the emulator tripped, exited to userspace and the VM
> was aborted.
Okay, this makes sense. Maybe you want to handle KVM_REQ_INTROSPECTION
in vcpu_run rather than vcpu_enter_guest?
Paolo
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
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
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