Displaying 9 results from an estimated 9 matches for "kvm_vcpu_check_block".
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;
> + }
> + }
>
> - waited = true;
> - schedule();
> + finish_swait(&v...
2019 Aug 09
0
[RFC PATCH v6 14/92] kvm: introspection: handle introspection commands before returning to guest
...69b9565 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2282,16 +2282,32 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
kvm_arch_vcpu_blocking(vcpu);
for (;;) {
- prepare_to_swait_exclusive(&vcpu->wq, &wait, TASK_INTERRUPTIBLE);
+ bool do_kvmi_work = false;
- if (kvm_vcpu_check_block(vcpu) < 0)
- break;
+ for (;;) {
+ 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_wo...
2018 Feb 06
2
Nested KVM: L0 guest produces kernel BUG on wakeup from managed save (while a nested VM is running)
...6 07:00:37 2018] Leftover inexact backtrace:
[Tue Feb 6 07:00:37 2018] [<ffffffffa0787875>] ?
vmx_interrupt_allowed+0x15/0x30 [kvm_intel]
[Tue Feb 6 07:00:37 2018] [<ffffffffa0503a60>] ?
kvm_arch_vcpu_runnable+0xa0/0xd0 [kvm]
[Tue Feb 6 07:00:37 2018] [<ffffffffa04e5ede>] ?
kvm_vcpu_check_block+0xe/0x60 [kvm]
[Tue Feb 6 07:00:37 2018] [<ffffffffa04e6f0f>] ?
kvm_vcpu_block+0x8f/0x310 [kvm]
[Tue Feb 6 07:00:37 2018] [<ffffffffa0503c17>] ?
kvm_arch_vcpu_ioctl_run+0x187/0x400 [kvm]
[Tue Feb 6 07:00:37 2018] [<ffffffffa04ea6d9>] ?
kvm_vcpu_ioctl+0x359/0x680 [kvm]
[Tue F...
2020 Feb 07
0
[RFC PATCH v7 48/78] KVM: introspection: handle vCPU introspection requests
...vmi;
+
+ kvmi = kvmi_get(vcpu->kvm);
+ if (!kvmi)
+ return;
+
+ kvmi_run_jobs(vcpu);
+
+ kvmi_put(vcpu->kvm);
+}
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index ef7d14ef8e86..b701254f1125 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2414,6 +2414,8 @@ static int kvm_vcpu_check_block(struct kvm_vcpu *vcpu)
goto out;
if (signal_pending(current))
goto out;
+ if (kvm_test_request(KVM_REQ_INTROSPECTION, vcpu))
+ goto out;
ret = 0;
out:
2018 Feb 07
0
Re: Nested KVM: L0 guest produces kernel BUG on wakeup from managed save (while a nested VM is running)
...[ 1323.683628] CR2: 000055d650532c20 CR3: 0000000221260000 CR4: 00000000001426f0
[ 1323.686697] Call Trace:
[ 1323.687817] intel_pmu_get_msr+0xd23/0x3f44 [kvm_intel]
[ 1323.690151] ? vmx_interrupt_allowed+0x19/0x40 [kvm_intel]
[ 1323.692583] kvm_arch_vcpu_runnable+0xa5/0xe0 [kvm]
[ 1323.694767] kvm_vcpu_check_block+0x12/0x50 [kvm]
[ 1323.696858] kvm_vcpu_block+0xa3/0x2f0 [kvm]
[ 1323.698762] kvm_arch_vcpu_ioctl_run+0x165/0x16a0 [kvm]
[ 1323.701079] ? kvm_arch_vcpu_load+0x6d/0x290 [kvm]
[ 1323.703175] ? __check_object_size+0xbb/0x1b3
[ 1323.705109] kvm_vcpu_ioctl+0x2a6/0x620 [kvm]
[ 1323.707021] ? kvm_vc...
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