Re: [Xen-devel] [PATCH v3 0/5] xen/arm: Merge early_printk function in console code

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 12.03.14 at 16:31, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
> Hi Jan,
> 
> On 03/12/2014 03:15 PM, Jan Beulich wrote:
>>>>> On 12.03.14 at 15:34, Julien Grall <julien.grall@xxxxxxxxxx> wrote:
>>> This patch series aims to merge early printk in the console code. This will
>>> avoid the developper to care whether the message is printed before or after
>>> the console is initialized.
>> 
>> Is ARM setting up the console so much later than x86 that this is
>> indeed warranted? IOW why can't you set up the console as early
>> as x86 does, and drop all uses of early_{printk,panic}?
> 
> Because to set up the console, you need:
>       - to partially parse the device tree to know which serial driver Xen
> will have to use

This part I understand (but don't know how involved the parsing
is).

>       - to relocate Xen and setup the xenheap pages

But this I don't understand - x86 does both after having set up
the console.

Jan


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