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Re: [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_c
From: |
Cornelia Huck |
Subject: |
Re: [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_creatable = false |
Date: |
Wed, 4 Oct 2017 17:42:27 +0200 |
On Wed, 4 Oct 2017 17:18:57 +0200
Pierre Morel <address@hidden> wrote:
> On 04/10/2017 15:53, Thomas Huth wrote:
> > The "sclp" device is just an internal device that can not be instantiated
> > by the users. If they try to use it, they only get a simple error message:
> >
> > $ qemu-system-s390x -nographic -device sclp
> > qemu-system-s390x: Option '-device s390-sclp-event-facility' cannot be
> > handled by this machine
> >
> > Since sclp_init() tries to create a TYPE_SCLP_EVENT_FACILITY which is
> > a non-pluggable sysbus device, there is really no way that the "sclp"
> > device can be used by the user, so let's set the user_creatable = false
> > accordingly.
> >
> > Signed-off-by: Thomas Huth <address@hidden>
> > ---
> > hw/s390x/sclp.c | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
> > index 30aefbf..9be0cb8 100644
> > --- a/hw/s390x/sclp.c
> > +++ b/hw/s390x/sclp.c
> > @@ -606,6 +606,11 @@ static void sclp_class_init(ObjectClass *oc, void
> > *data)
> > dc->realize = sclp_realize;
> > dc->hotpluggable = false;
> > set_bit(DEVICE_CATEGORY_MISC, dc->categories);
> > + /*
> > + * Reason: Creates TYPE_SCLP_EVENT_FACILITY in sclp_init
> > + * which is a non-pluggable sysbus device
> > + */
> > + dc->user_creatable = false;
> >
> > sc->read_SCP_info = read_SCP_info;
> > sc->read_storage_element0_info = read_storage_element0_info;
> >
>
> I must miss something.
> Why is the sclp device not a SYS_BUS_DEVICE ?
> The problem seems to come from the heterogeneity of the sclp and sclp
> generated devices.
>
I think the problem is 'not pluggable' rather than whether it is or
is not a sysbus device, no?
- [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_creatable = false, Thomas Huth, 2017/10/04
- Re: [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_creatable = false, Claudio Imbrenda, 2017/10/04
- Re: [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_creatable = false, Farhan Ali, 2017/10/04
- Re: [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_creatable = false, Halil Pasic, 2017/10/04
- Re: [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_creatable = false, Pierre Morel, 2017/10/04
- Re: [Qemu-devel] [PATCH] hw/s390x/sclp: Mark the sclp device with user_creatable = false, Cornelia Huck, 2017/10/05