linux-kernel - Re: platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe

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Message-ID: <ZztmlT8mBb2NIJ1z@smile.fi.intel.com>
Date: Mon, 18 Nov 2024 18:08:53 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Hans de Goede <hdegoede@...hat.com>
Cc: "Daniel Walker (danielwa)" <danielwa@...co.com>,
	Shinichiro Kawasaki <shinichiro.kawasaki@....com>,
	Ilpo J�rvinen <ilpo.jarvinen@...ux.intel.com>,
	Klara Modin <klarasmodin@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Danil Rybakov <danilrybakov249@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"xe-linux-external(mailer list)" <xe-linux-external@...co.com>
Subject: Re: platform/x86: p2sb: Allow p2sb_bar() calls during PCI device
 probe

On Mon, Nov 18, 2024 at 05:00:52PM +0100, Hans de Goede wrote:
> On 18-Nov-24 4:55 PM, Andy Shevchenko wrote:

...

> Agreed, still I'm not sure how I feel about us hiding the previously unhidden P2SB.
> 
> OTOH I guess it may have only been unhidden in the BIOS to make the hack they
> are using possible in the first place.

Yeah, sounds like this, because the whole dance with this hiding-unhiding
is due to the Windows yellow bang, due to no driver for the thingy, and
scared users. Reference BIOS should hide it by default when giving a control
to the bootloader and OS.

-- 
With Best Regards,
Andy Shevchenko