On 08/14/2018 05:52 AM, Heiko Carstens wrote:
On Mon, Aug 13, 2018 at 08:18:36PM -0700, Guenter Roeck wrote:
Hi,
when booting s390 images in qemu, I notice the following:
/ # cat /proc/consoles
ttyS1 -W- (EC p ) 4:65
/ # ls /dev/ttyS*
ls: /dev/ttyS*: No such file or directory
/ #
/ # dmesg | grep tty
console [ttyS1] enabled
In reality, the console is at /dev/ttysclp0.
Any idea what is going on ?
This is expected behavior. The sclp vt220 driver provides two types of
Linux devices: a console device and a tty device.
/proc/consoles only lists console device names as used by the console=
kernel parameter. The character device node associated with the console is
always /dev/console.
tty device nodes are created based on tty devices names. Typically console
and tty device names are the same, but in case of the sclp console device
driver different names are used for historical reasons.
Interesting. Thanks a lot for the information.
Guenter
