linux-kernel - Re: stop breaking dosemu (Re: x86/kconfig/32: Rename CONFIG

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Date:	Wed, 2 Sep 2015 16:59:10 -0400
From:	Josh Boyer <jwboyer@...oraproject.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Stas Sergeev <stsp@...t.ru>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Andrew Bird (Sphere Systems)" <ajb@...eresystems.co.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Kees Cook <keescook@...omium.org>,
	Brian Gerst <brgerst@...il.com>
Subject: Re: stop breaking dosemu (Re: x86/kconfig/32: Rename CONFIG_VM86 and
 default it to 'n')

On Wed, Sep 2, 2015 at 4:55 PM, Andy Lutomirski <luto@...capital.net> wrote:
> On Wed, Sep 2, 2015 at 1:47 PM, Stas Sergeev <stsp@...t.ru> wrote:
>> 02.09.2015 23:22, Josh Boyer пишет:
>>>
>>> On Wed, Sep 2, 2015 at 1:50 PM, Stas Sergeev <stsp@...t.ru> wrote:
>>>>
>>>> 02.09.2015 20:46, Josh Boyer пишет:
>>>>>
>>>>> On Wed, Sep 2, 2015 at 10:08 AM, Andy Lutomirski <luto@...capital.net>
>>>>> wrote:
>>>>>>
>>>>>> I'd be amenable to switching the default back to y and perhaps adding
>>>>>> a sysctl to make the distros more comfortable.  Ingo, Kees, Brian,
>>>>>> what do you think?
>>>>>
>>>>> Can you please leave the default as N, and have a sysctl option to
>>>>> enable it instead?  While dosemu might still be in use, it isn't going
>>>>> to be the common case at all.  So from a distro perspective, I think
>>>>> we'd probably rather have the default match the common case.
>>>>
>>>> The fact that fedora doesn't package dosemu, doesn't automatically
>>>> mean all other distros do not too. Since when kernel defaults should
>>>> match the ones of fedora?
>>>
>>> I didn't say that.
>>
>> What you said was:
>> ---
>>
>> While dosemu might still be in use, it isn't going
>> to be the common case at all.  So from a distro perspective
>>
>> ---
>> ... which is likely true only in fedora circe.
>>
>>>    The default right now is N.
>>
>> In a not yet released kernel, unless I am mistaken.
>> If fedora already provides that kernel, other distros likely not.

We do.

>>>    I asked it be left
>>> that way.  That's all.
>>
>> Lets assume its not yet N, unless there was a kernel release already.
>> Its easy to get back if its not too late.

You are correct.

> How about CONFIG_SYSCTL_VM86_DEFAULT which defaults to Y?  Fedora
> could set it to N.

Works for me.

josh
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