linux-kernel - Re: [PATCH] don't select EFI from certain special ACPI drivers

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Date:	Wed, 18 Dec 2013 11:13:38 -0800
From:	Tony Luck <tony.luck@...el.com>
To:	"mingo@...nel.org" <mingo@...nel.org>
Cc:	Matt Fleming <matt.fleming@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jan Beulich <JBeulich@...e.com>
Subject: Re: [PATCH] don't select EFI from certain special ACPI drivers

On Wed, Dec 18, 2013 at 12:04 AM, Jan Beulich <JBeulich@...e.com> wrote:
>>>> On 17.12.13 at 23:34, "Luck, Tony" <tony.luck@...el.com> wrote:
>>>  No, it hasn't. But I explicitly checked the relevant EFI=n and EFI=y
>>> cases.
>>
>> I pushed your patch into my "next" tree - the robots will notice soon and
>> send us e-mail if they find any issues.
>
> Thanks, Tony. I'm afraid though that fixing this only in 3.14 would
> be a little late: Any "select" in a Kconfig results in the user not being
> asked again when that "select" goes away, so people having got EFI
> forcibly enabled in 3.13 and updating their configs to 3.14 would
> then need to remember to manually disable CONFIG_EFI again (of
> course that's already true for anyone using 3.13-rc?, but those
> should mostly be people more knowledgeable than folks just
> consuming final releases).
>
> I think it should generally be the exception to "select" options that
> have visible prompts (i.e. are user configurable).

Ingo: Jan makes a good point that people running "make oldconfig"
may get suckered into selecting CONFIG_EFI when they don't really
need it.  I've not seen any complaints from the robot randconfig testers,
so this patch is:

Acked-by: Tony Luck <tony.luck@...el.com>

Can you push it to Linus before 3.13-final releases?

-Tony
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