Re: [PATCH] serial: forbid 8250 on s390

From: Alan Cox
Date: Tue Dec 12 2017 - 10:50:51 EST


On Tue, 12 Dec 2017 09:08:35 +0100
Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote:

> Using "make kvmconfig" results in a potentially unusable linux image
> on s390. The reason is that both the (default on s390) sclp consoles
> as well as the 8250 console register a ttyS<x> as console. Since there
> will be no 8250 on s390 let's fence 8250. This will ensure that there
> is always a working sclp console.

And there is no physical way to attach a PCI express UART to a 390 ?

Alan