Re: [PATCH] ns16550c: avoid crash in ns16550_endboot in PV shim mode

["Durrant, Paul" <xadimgnik@xxxxxxxxx>]

On 20/10/2023 14:37, David Woodhouse wrote:
[snip]
> > [0] 
> > https://elixir.bootlin.com/linux/latest/source/drivers/tty/hvc/hvc_xen.c#L258
> I'm not convinced I believe what the comment says there about evtchn 0
> being theoretically valid. I don't believe zero is a valid evtchn#, is
> it?
gfn 0 might be valid, but I'm also pretty sure evtchn 0 is not valid.

  Paul