Re: [PATCH] s390/sclp_vt220: Fix console name to match device

From: Christian Borntraeger
Date: Wed May 20 2020 - 03:14:34 EST




On 20.05.20 09:07, Valentin VidiÄ wrote:
> On Wed, May 20, 2020 at 07:25:06AM +0200, Christian Borntraeger wrote:
>> This is not as simple. ttyS1 is the the console name and ttysclp0 is the tty name.
>> This has mostly historic reasons and it obviously causes problems.
>> But there is documentation out that that actually describes the use of
>> console=ttyS1 console=ttyS0.
>> to have console output on both sclp consoles and there are probably scripts
>> using ttyS1.
>>
>> I am wondering. The tty for ttyS0 is named sclp_line0. Does this work in LPAR?
>
> I ran into this problem with qemu-system-s390x, so not sure about LPAR.
> Would changing the tty name also cause problems?

My point was more that a similar issue should happen when installing in LPAR. LPAR
uses the line mode style console which is ttyS0 for the console but sclp_line0 for the
tty. How does the debian installer handle this?

Regarding your patch I fear that this patch would break existing setups so we cannot
use it as is.