Re: [Xen-devel] [RFC 24/29] xen/arm: Don't use pl011 UART by default for early printk

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 04/30/2013 01:44 PM, Ian Campbell wrote:

> On Tue, 2013-04-30 at 12:21 +0100, Julien Grall wrote:
>> Missing Xen devel mailing list.
> 
> Ignore my private reply, I've inserted it below...
> 
>>         
>>         Thanks. Even if we gate CONFIG_EARLY_PRINTK to debug=y, we
>>         should let the developper the option to disable/enable early
>>         printk. Otherwise we will lost debug when Xen can boot on
>>         multiple board.
> 
> I'm not sure I follow, these are both valid
>         debug=y CONFIG_EARLY_PRINTK=pl011
>         debug=y /* No early printk */
> In the latter case you have debug on a system which can boot on multiple
> boards.
> 
> Or are you concerned about not being able to build a production
> (non-debug) hypervisor with early-printk? i.e.
>         debug=n CONFIG_EARLY_PRINTK=pl011
> ?

It's the first one. CONFIG_EARLY_PRINTK should not be enabled on a
production build.

-- 
Julien


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