linux-kernel - Re: [PATCH 03/10] vfio: ccw: new SCH

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Date:   Wed, 25 Apr 2018 15:54:21 +0200
From:   Pierre Morel <pmorel@...ux.vnet.ibm.com>
To:     Cornelia Huck <cohuck@...hat.com>
Cc:     pasic@...ux.vnet.ibm.com, bjsdjshi@...ux.vnet.ibm.com,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Subject: Re: [PATCH 03/10] vfio: ccw: new SCH_EVENT event

On 25/04/2018 10:25, Cornelia Huck wrote:
> On Thu, 19 Apr 2018 16:48:06 +0200
> Pierre Morel <pmorel@...ux.vnet.ibm.com> wrote:
>
>> The Sub channel event callback is threaded using workqueues.
>> The work uses the FSM introducing the VFIO_CCW_EVENT_SCH_EVENT
>> event.
> I don't think this is a good name; after all, all of the events are
> events for the subchannel :)
>
> This seems to be more of a "we need to update the schib" event...
> VFIO_CCW_EVENT_SCHIB_CHANGED? _SCH_CHANGED? _UPDATE_NEEDED?
>
> Tbh, I'm not quite sure this makes sense for me yet... will continue
> reading, but this probably needs a 'why'.

SCHIB_CHANGED or something like this sounds better indeed. :)

>
>> The update of the SCHIB is now done inside the FSM function.
>>
>> Signed-off-by: Pierre Morel <pmorel@...ux.vnet.ibm.com>
>> ---
>>   drivers/s390/cio/vfio_ccw_drv.c     | 33 +++++++++++++--------------------
>>   drivers/s390/cio/vfio_ccw_fsm.c     | 23 +++++++++++++++++++++++
>>   drivers/s390/cio/vfio_ccw_private.h |  3 +++
>>   3 files changed, 39 insertions(+), 20 deletions(-)


-- 
Pierre Morel
Linux/KVM/QEMU in Böblingen - Germany