diff options
| author | Fan Zhang <zhangfan@linux.vnet.ibm.com> | 2015-02-12 18:02:14 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-02-13 16:14:09 +0100 |
| commit | df75a4e2c607836eee044d7e6b0d94724d6ebf21 (patch) | |
| tree | d17ea032e83adb532c7dbe56a8c2f8f68b3ccef8 /qemu-tech.texi | |
| parent | f0180f913e3bcd04cb132f5f6036e823a78e0673 (diff) | |
s390x/ipl: support diagnose 308 subcodes 5 and 6
To support dynamically updating the IPL device from inside the KVM
guest on the s390 platform, DIAG 308 instruction is intercepted
in QEMU to handle the request.
Subcode 5 allows to specify a new boot device, which is saved for
later in the s390_ipl device. This also allows to switch from an
external kernel to a boot device.
Subcode 6 retrieves boot device configuration that has been previously
set.
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'qemu-tech.texi')
0 files changed, 0 insertions, 0 deletions