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

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Message-ID: <CA+5PVA4JGZYGcod0HLg-0Y2JsKbqOKr4KJcgy76uejAPr1gAAA@mail.gmail.com>
Date:	Wed, 2 Sep 2015 16:25:51 -0400
From:	Josh Boyer <jwboyer@...oraproject.org>
To:	Kees Cook <keescook@...omium.org>
Cc:	Andy Lutomirski <luto@...capital.net>, 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>, 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 1:52 PM, Kees Cook <keescook@...omium.org> wrote:
> On Wed, Sep 2, 2015 at 10:46 AM, Josh Boyer <jwboyer@...oraproject.org> wrote:
>> 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.
>
> Linus will say the default must not break existing userspace...

Yeah, I guess.  Which is weird when it's already N in his tree and
we're talking about a config option that is explicitly there to
disable things.  Something will be broken if it's toggled, but oh
well.

josh
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