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) --- 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: https://lore.kernel.org/qemu-devel/20220923073333.23381-1-chenyi.qiang@xxxxxxxxx/ v6 -> v7 - Add a warning message when exiting to userspace (Peter Xu) - v6: https://lore.kernel.org/all/20220915092839.5518-1-chenyi.qiang@xxxxxxxxx/ 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@xxxxxxxxx/ --- 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(-) -- 2.17.1
