Re: [PATCH v8 0/4] Enable notify VM exit

[Chenyi Qiang]

On 9/30/2022 1:28 AM, Paolo Bonzini wrote:
> On 9/29/22 09:03, Chenyi Qiang wrote:
> > Notify VM exit is introduced to mitigate the potential DOS attach from
> > malicious VM. This series is the userspace part to enable this feature
> > through a new KVM capability KVM_CAP_X86_NOTIFY_VMEXIT. The detailed
> > info can be seen in Patch 4.
> >
> > The corresponding KVM support can be found in linux 6.0-rc:
> > (2f4073e08f4c KVM: VMX: Enable Notify VM exit)
>
> Thanks, I will queue this in my next pull request.
>
> Paolo

Thanks Paolo!

Please take the resend version at 
20220929072014.20705-1-chenyi.qiang@intel.com/">https://lore.kernel.org/qemu-devel/20220929072014.20705-1-chenyi.qiang@intel.com/

There's a minor compile issue in this one.

Chenyi

> > ---
> > Change logs:
> > v7 -> v8
> > - Add triple_fault_pending field transmission on migration (Paolo)
> > - Change the notify-vmexit and notify-window to the accelerator 
> > property. Add it as
> >    a x86-specific property. (Paolo)
> > - Add a preparation patch to expose struct KVMState in order to add 
> > target-specific property.
> > - Define three option for notify-vmexit. Make it on by default. (Paolo)
> > - Raise a KVM internal error instead of triple fault if invalid 
> > context of guest VMCS detected.
> > - v7: 
> > 20220923073333.23381-1-chenyi.qiang@intel.com/">https://lore.kernel.org/qemu-devel/20220923073333.23381-1-chenyi.qiang@intel.com/
> >
> > v6 -> v7
> > - Add a warning message when exiting to userspace (Peter Xu)
> > - v6: 
> > 20220915092839.5518-1-chenyi.qiang@intel.com/">https://lore.kernel.org/all/20220915092839.5518-1-chenyi.qiang@intel.com/
> >
> > v5 -> v6
> > - Add some info related to the valid range of notify_window in patch 
> > 2. (Peter Xu)
> > - Add the doc in qemu-options.hx. (Peter Xu)
> > - v5: 
> > https://lore.kernel.org/qemu-devel/20220817020845.21855-1-chenyi.qiang@intel.com/
> >
> > ---
> >
> > Chenyi Qiang (3):
> >    i386: kvm: extend kvm_{get, put}_vcpu_events to support pending triple
> >      fault
> >    kvm: expose struct KVMState
> >    i386: add notify VM exit support
> >
> > Paolo Bonzini (1):
> >    kvm: allow target-specific accelerator properties
> >
> >   accel/kvm/kvm-all.c      |  78 ++-----------------------
> >   include/sysemu/kvm.h     |   2 +
> >   include/sysemu/kvm_int.h |  75 ++++++++++++++++++++++++
> >   qapi/run-state.json      |  17 ++++++
> >   qemu-options.hx          |  11 ++++
> >   target/arm/kvm.c         |   4 ++
> >   target/i386/cpu.c        |   1 +
> >   target/i386/cpu.h        |   1 +
> >   target/i386/kvm/kvm.c    | 121 +++++++++++++++++++++++++++++++++++++++
> >   target/i386/machine.c    |  20 +++++++
> >   target/mips/kvm.c        |   4 ++
> >   target/ppc/kvm.c         |   4 ++
> >   target/riscv/kvm.c       |   4 ++
> >   target/s390x/kvm/kvm.c   |   4 ++
> >   14 files changed, 272 insertions(+), 74 deletions(-)