From 7939503147f89f0799ddc89afec2aeae57dd7e2c Mon Sep 17 00:00:00 2001
From: Jens Freimann <jfrei@linux.vnet.ibm.com>
Date: Thu, 17 Apr 2014 10:10:30 +0200
Subject: [PATCH] KVM: s390: return -EFAULT if lowcore is not mapped during irq
 delivery

Currently we just kill the userspace process and exit the thread
immediatly without making sure that we don't hold any locks etc.

Improve this by making KVM_RUN return -EFAULT if the lowcore is not
mapped during interrupt delivery. To achieve this we need to pass
the return code of guest memory access routines used in interrupt
delivery all the way back to the KVM_RUN ioctl.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
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