From: Alexander Graf <agraf@suse.de>
To: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: armbru@redhat.com, mdroth@linux.vnet.ibm.com,
qemu-devel@nongnu.org, borntraeger@de.ibm.com,
jfrei@linux.vnet.ibm.com, Xu Wang <gesaint@linux.vnet.ibm.com>,
lcapitulino@redhat.com
Subject: Re: [Qemu-devel] [PATCH 1/6] s390x/virtio-ccw: enable has_dynamic_sysbus
Date: Wed, 22 Apr 2015 11:14:40 +0200 [thread overview]
Message-ID: <55376680.3070601@suse.de> (raw)
In-Reply-To: <20150422102501.406fc113.cornelia.huck@de.ibm.com>
On 04/22/2015 10:25 AM, Cornelia Huck wrote:
> On Tue, 21 Apr 2015 21:06:42 +0200
> Alexander Graf <agraf@suse.de> wrote:
>
>> On 04/17/2015 09:52 AM, Cornelia Huck wrote:
>>> From: Xu Wang <gesaint@linux.vnet.ibm.com>
>>>
>>> We have to enable this flag to support dynamically adding devices to the
>>> sysbus. This change is needed for the the upcoming diag288 watchdog.
>> s390 doesn't have a "sysbus" per se. Please create a new bus type.
> So what's wrong with the sysbus? I don't see why we should be different
> than everyone else.
The idea behind sysbus is that you have MMIO, PIO and IRQ pins
connecting to a PIC. It provides a lot of infrastructure for those
interfaces. S390 doesn't use any of them and instead wants registration
on "diag" interfaces for example which I'd put on the same layer as PIO
or MMIO registration.
Alex
next prev parent reply other threads:[~2015-04-22 9:16 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-17 7:52 [Qemu-devel] [PATCH 0/6] s390x: support diag288 watchdog Cornelia Huck
2015-04-17 7:52 ` [Qemu-devel] [PATCH 1/6] s390x/virtio-ccw: enable has_dynamic_sysbus Cornelia Huck
2015-04-21 19:06 ` Alexander Graf
2015-04-22 8:25 ` Cornelia Huck
2015-04-22 9:14 ` Alexander Graf [this message]
2015-04-22 11:40 ` Cornelia Huck
2015-04-22 12:21 ` Alexander Graf
2015-04-24 9:07 ` Cornelia Huck
2015-04-27 13:57 ` Alexander Graf
2015-04-27 14:19 ` Cornelia Huck
2015-04-27 15:15 ` Andreas Färber
2015-04-27 17:02 ` Cornelia Huck
2015-04-27 15:28 ` Alexander Graf
2015-04-27 16:56 ` Cornelia Huck
2015-04-28 6:50 ` Markus Armbruster
2015-04-17 7:52 ` [Qemu-devel] [PATCH 2/6] watchdog: Add watchdog device diag288 to the sysbus Cornelia Huck
2015-04-29 12:43 ` Markus Armbruster
2015-04-29 14:58 ` Cornelia Huck
2015-05-08 9:16 ` Cornelia Huck
2015-04-17 7:52 ` [Qemu-devel] [PATCH 3/6] s390/kvm: diag288 instruction interception and handling Cornelia Huck
2015-04-21 19:09 ` Alexander Graf
2015-04-22 8:32 ` Cornelia Huck
2015-04-22 9:16 ` Alexander Graf
2015-04-22 11:37 ` Cornelia Huck
2015-04-17 7:52 ` [Qemu-devel] [PATCH 4/6] watchdog: Add migration support to diag288 watchdog device Cornelia Huck
2015-04-17 7:52 ` [Qemu-devel] [PATCH 5/6] nmi: Implement inject_nmi() for non-monitor context use Cornelia Huck
2015-04-17 7:52 ` [Qemu-devel] [PATCH 6/6] watchdog: Add new Virtual Watchdog action INJECT-NMI Cornelia Huck
2015-04-17 12:28 ` Eric Blake
2015-04-20 15:23 ` Cornelia Huck
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