From: Cornelia Huck <cohuck@redhat.com>
To: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>,
Halil Pasic <pasic@linux.vnet.ibm.com>
Cc: linux-s390@vger.kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, Cornelia Huck <cohuck@redhat.com>
Subject: [PATCH 0/1] vfio-ccw: be less trusting
Date: Thu, 22 Feb 2018 16:39:58 +0100 [thread overview]
Message-ID: <20180222153959.31272-1-cohuck@redhat.com> (raw)
I'm currently prototyping hsch()/csch() support for vfio-ccw, and
stumbled over this: We currently expect any I/O to be in command-mode,
but don't take care to actively reject transport-mode. This is not an
issue with QEMU (which rejects transport-mode ORBs before even the css
backend gets to it), but better play safe.
Should we want to support transport-mode in the future, we'll probably
need to introduce a capability for it that needs to be enabled by user
space.
[I also still have the doc patch from some time ago queued. Let's see
if we'll collect more patches.]
Cornelia Huck (1):
vfio-ccw: fence off transport mode
drivers/s390/cio/vfio_ccw_fsm.c | 5 +++++
1 file changed, 5 insertions(+)
--
2.13.6
next reply other threads:[~2018-02-22 15:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-22 15:39 Cornelia Huck [this message]
2018-02-22 15:39 ` [PATCH 1/1] vfio-ccw: fence off transport mode Cornelia Huck
2018-03-01 14:51 ` Halil Pasic
2018-03-01 15:07 ` Cornelia Huck
2018-03-02 12:03 ` Cornelia Huck
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