Re: [Xen-devel] [PATCH v2] x86/monitor: Notify monitor if an emulation fails.

[Tamas K Lengyel <tamas@xxxxxxxxxxxxx>]

On Tue, Jul 11, 2017 at 8:53 AM, Petre Pircalabu
<ppircalabu@xxxxxxxxxxxxxxx> wrote:
> If case of a vm_event with the emulate_flags set, if the instruction
> cannot be emulated, the monitor should be notified instead of directly
> injecting a hw exception.
> This behavior can be used to re-execute an instruction not supported by
> the emulator using the real processor (e.g. altp2m) instead of just
> crashing.
>
> Signed-off-by: Petre Pircalabu <ppircalabu@xxxxxxxxxxxxxxx>
>
> ---
> Changed since v1:
>   * Removed the emulation kind check when calling hvm_inject_hw_exception
> ---
>  tools/libxc/include/xenctrl.h                      |   2 +
>  tools/libxc/xc_monitor.c                           |  14 ++
>  ...itor-Notify-monitor-if-an-emulation-fails.patch | 212 
> +++++++++++++++++++++
>  xen/arch/x86/hvm/emulate.c                         |   5 +-
>  xen/arch/x86/hvm/monitor.c                         |  19 ++
>  xen/arch/x86/monitor.c                             |  12 ++
>  xen/include/asm-x86/domain.h                       |   1 +
>  xen/include/asm-x86/hvm/monitor.h                  |   1 +
>  xen/include/asm-x86/monitor.h                      |   3 +-
>  xen/include/public/domctl.h                        |   1 +
>  xen/include/public/vm_event.h                      |   2 +
>  11 files changed, 270 insertions(+), 2 deletions(-)
>  create mode 100644 
> tools/tests/xen-access/0001-x86-monitor-Notify-monitor-if-an-emulation-fails.patch

I don't think you meant to add this patch file.

Tamas

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