tree bab1d1518254724a3320ff2e56c3937dc524e14a
parent 8e4e86afa524588397be2101c3582c897fc408df
author David Hildenbrand <dahi@linux.vnet.ibm.com> 1393339980 +0100
committer Cornelia Huck <cornelia.huck@de.ibm.com> 1400583958 +0200

s390x/kvm: software breakpoint support

This patch allows to insert and remove sw breakpoints using the QEMU gdbserver
on s390 as well as to interrupt execution on a breakpoint hit when running
with KVM enabled.

Whenever a software breakpoint is inserted, common code calls kvm ioctl
KVM_UPDATE_GUEST_DEBUG. As this method's default on s390 is to return an error
if not implement, the insertion will fail. Therefore, KVM also has to be
updated in order to make use of software breakpoints.

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