Re: [PATCH] ignore ,keep for efi earlyprintk

[Dave Young]

On 04/24/14 at 12:45pm, Ingo Molnar wrote:
> 
> * Dave Young <dyoung@xxxxxxxxxx> wrote:
> 
> > earlyprint=efi,keep results a kernel hang after "Freeing unused kernel memory"
> 
> That's a bug.
> 
> > 
> > Actually efi earlyprintk is using __init functions such as early_ioremap etc.
> > Thus efi earlyconsole can not be kept.
> > 
> > So just ignore it and give out a warning to user.
> 
> So, bugs should be fixed, not worked around.
> 
> earlyprintk=,keep is really useful for the occasional difficult low 
> level bug in the printk code or similar, because earlyprintk is a 
> completely separate code path from printk().

I thought that earlyprintk is just for debugging before real console is available.
But it does help debugging printk as you said.

Will think about how to fix it.

Thanks
Dave
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/