diff options
| author | Thomas Huth <thuth@redhat.com> | 2018-04-26 16:59:54 +0200 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2018-04-30 10:48:29 +0200 |
| commit | 052888f043bacb18231046045b1f9cd946703170 (patch) | |
| tree | b3753be496f7464383dbdd48f42d20685b834eb5 /include/hw/boards.h | |
| parent | e7c3246162398677eb96f55f267de00809ea213d (diff) | |
| download | qemu-052888f043bacb18231046045b1f9cd946703170.tar.gz | |
hw/s390x: Allow to configure the consoles with the "-serial" parameter
The consoles ("sclpconsole" and "sclplmconsole") can only be configured
with "-device" and "-chardev" so far. Other machines use the convenience
option "-serial" to configure the default consoles, even for virtual
consoles like spapr-vty on the pseries machine. So let's support this
option on s390x, too. This way we can easily enable the serial console
here again with "-nodefaults", for example:
qemu-system-s390x -no-shutdown -nographic -nodefaults -serial mon:stdio
... which is way shorter than typing:
qemu-system-s390x -no-shutdown -nographic -nodefaults \
-chardev stdio,id=c1,mux=on -device sclpconsole,chardev=c1 \
-mon chardev=c1
The -serial parameter can also be used if you only want to see the QEMU
monitor on stdio without using -nodefaults, but not the console output.
That's something that is pretty impossible with the current code today:
qemu-system-s390x -no-shutdown -nographic -serial none
While we're at it, this patch also maps the second -serial option to the
"sclplmconsole", so that there is now an easy way to configure this second
console on s390x, too, for example:
qemu-system-s390x -no-shutdown -nographic -serial null -serial mon:stdio
Additionally, the new code is also smaller than the old one and we have
less s390x-specific code in vl.c :-)
I've also checked that migration still works as expected by migrating
a guest with console output back and forth between a qemu-system-s390x
that has this patch and an instance without this patch.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1524754794-28005-1-git-send-email-thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'include/hw/boards.h')
| -rw-r--r-- | include/hw/boards.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h index a609239112..5c5eee55e6 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -180,7 +180,6 @@ struct MachineClass { unsigned int no_serial:1, no_parallel:1, use_virtcon:1, - use_sclp:1, no_floppy:1, no_cdrom:1, no_sdcard:1, |