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Date: Wed, 1 Apr 2015 10:56:00 +0200
From: Robert Richter <rric@kernel.org>
To: Borislav Petkov <bp@alien8.de>
Cc: LKML <linux-kernel@vger.kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
        Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
        Tony Luck <tony.luck@intel.com>, Peter Zijlstra <peterz@infradead.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Andy Lutomirski <luto@amacapital.net>,
        Matt Fleming <matt@codeblueprint.co.uk>,
        =?iso-8859-1?Q?J=F6rg_R=F6del?= <joro@8bytes.org>,
        Jiri Kosina <jkosina@suse.cz>, Jeff Mahoney <jeffm@suse.com>,
        Michal Hocko <mhocko@suse.cz>, Vlastimil Babka <vbabka@suse.cz>,
        Andre Przywara <andre@andrep.de>,
        Andreas Herrmann <herrmann.der.user@gmail.com>,
        Richard Weinberger <richard@nod.at>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andi Kleen <andi@firstfloor.org>
Subject: Re: [PATCH] x86: Drop 32-bit support ... finally.
Message-ID: <20150401085600.GG4201@rric.localhost>
References: <1427876158-18323-1-git-send-email-bp@alien8.de>
 <20150401082156.GA18371@pd.tnic>
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(cc'ing Andi)

> On Wed, Apr 01, 2015 at 10:15:58AM +0200, Borislav Petkov wrote:
> > From: Borislav Petkov <bp@suse.de>
> > 
> > Today, April 1st 2015, marks almost 15 years since the introduction of
> > the 64-bit extensions to the x86 architecture. And frankly, 15 years was
> > a graceful period enough for people to move to 64-bit. Therefore, today,
> > I'm removing 32-bit support from x86 Linux. And it was about friggin'
> > time...

No, I vaguely remember booting the first 64 bit cpu (on real hw) for
the 2002-2003 time frame. I need to check my memories on a more exact
date, but you guys from Suse should know better. So 15 years are not
yet over and I really would like to wait at least until then. Another
question is if 64-bit simulators take into account here.

Though, I assume a discussion on this topic will at least take 1-2
years, so it's good to start with it now. Also, I really would like to
finally switch off and retire my K7 which still runs some regression
tests (will need to check the actual used kernel version). It was a
good time, but now I realize it's somehow over. Considering this and
apart from my concerns above:

Acked-by: Robert Richter <rric@kernel.org>

-Robert