On Mon, Jun 28, 2021 at 06:31:50PM +0100, David Edmondson wrote: > To aid in debugging failures in the field, when instruction emulation What do you mean by a "debugging failure"? > fails, report the VM exit reason to userspace in order that it can be > recorded. What is the benefit of seeing the VM-exit reason that led to an emulation failure? > > The changes are on top of Aaron's patches from > https://lore.kernel.org/r/20210510144834.658457-1-aaronlewis@xxxxxxxxxx > which are in the KVM queue, but not yet upstream. > > David Edmondson (2): > KVM: x86: Add kvm_x86_ops.get_exit_reason > KVM: x86: On emulation failure, convey the exit reason to userspace > > arch/x86/include/asm/kvm-x86-ops.h | 1 + > arch/x86/include/asm/kvm_host.h | 1 + > arch/x86/kvm/svm/svm.c | 6 ++++++ > arch/x86/kvm/vmx/vmx.c | 6 ++++++ > arch/x86/kvm/x86.c | 23 +++++++++++++++++------ > include/uapi/linux/kvm.h | 2 ++ > 6 files changed, 33 insertions(+), 6 deletions(-) > > -- > 2.30.2 >
