linux-kernel - Re: [PATCH v6 3/3] x86/earlyprintk: setup earlyprintk as early as possible

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Message-ID: <CANCZXo7Vjnx=RMufVXx6QASTqB8Q4Oh+Oi-txmj5NRhYdA9Zhg@mail.gmail.com>
Date:	Wed, 13 May 2015 00:08:25 +0600
From:	Alexander Kuleshov <kuleshovmail@...il.com>
To:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Borislav Petkov <bp@...e.de>,
	Mark Rustad <mark.d.rustad@...el.com>,
	Yinghai Lu <yinghai@...nel.org>
Subject: Re: [PATCH v6 3/3] x86/earlyprintk: setup earlyprintk as early as possible

2015-05-12 23:58 GMT+06:00 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>:
>> >
>>
>> Because for now we can setup only serial console, for other we need ioremap
>> which is not enabled for this moment. Here we just try to find serial console
>> and setup it, if another argument passed to the 'earlyprintk', it will
>> be parsed in the
>> 'setup_arch'.
>
> Even for EFI case?
>

If I understand correctly, yes. As we can read from early_efi_map_fb function
(which setup with early_initcall) comment: efi earlyprintk need use
early_ioremap
to map the framebuffer.
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