Re: [Qemu-devel] [PATCH v7 3/4] s390x: Migrate to new NMI interface

[Cornelia Huck <cornelia.huck@de.ibm.com>]

On Fri, 13 Jun 2014 13:36:58 +1000
Alexey Kardashevskiy <aik@ozlabs.ru> wrote:

> This implements an NMI interface for s390 and s390-ccw machines.
> 
> This removes #ifdef s390 branch in qmp_inject_nmi so new s390's
> nmi_monitor_handler() callback is going to be used for NMI.
> 
> Since nmi_monitor_handler()-calling code is platform independent,
> CPUState::cpu_index is used instead of S390CPU::env.cpu_num.
> There should not be any change in behaviour as both @cpu_index and
> @cpu_num are global CPU numbers.
> 
> Also, s390_cpu_restart() takes care of preforming operations in
> the specific CPU thread so no extra measure is required here either.

I find this paragraph a bit confusing; I'd just remove it.

> 
> Since the only error s390_cpu_restart() can return is ENOSYS, convert
> it to QERR_UNSUPPORTED.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
> ---
> Changes:
> v7:
> * since now s390' are QOM'ed, add interface to them and do not create
> new object
> 
> v6:
> * supported NMI interface
> 
> v5:
> * added ENOSYS -> QERR_UNSUPPORTED, qapi/qmp/qerror.h was added for this
> 
> v4:
> * s/\<nmi\>/nmi_monitor_handler/
> 
> v3:
> * now contains both old code removal and new code insertion, easier to
> track changes
> 
> Conflicts:
> 	hw/s390x/s390-virtio.c
> ---
>  cpus.c                     | 14 --------------
>  hw/s390x/s390-virtio-ccw.c |  6 ++++++
>  hw/s390x/s390-virtio.c     | 15 +++++++++++++++
>  hw/s390x/s390-virtio.h     |  3 +++
>  4 files changed, 24 insertions(+), 14 deletions(-)
> 
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>