From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f69.google.com (mail-wm0-f69.google.com [74.125.82.69]) by kanga.kvack.org (Postfix) with ESMTP id 634EA6B0003 for ; Sun, 11 Feb 2018 17:34:23 -0500 (EST) Received: by mail-wm0-f69.google.com with SMTP id f3so1661232wmc.8 for ; Sun, 11 Feb 2018 14:34:23 -0800 (PST) Received: from atrey.karlin.mff.cuni.cz (atrey.karlin.mff.cuni.cz. [195.113.26.193]) by mx.google.com with ESMTPS id 61si5343045wrq.197.2018.02.11.14.34.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 11 Feb 2018 14:34:22 -0800 (PST) Date: Sun, 11 Feb 2018 23:34:18 +0100 From: Pavel Machek Subject: Re: [PATCH 00/31 v2] PTI support for x86_32 Message-ID: <20180211223416.GA3762@localhost> References: <1518168340-9392-1-git-send-email-joro@8bytes.org> <20180209191112.55zyjf4njum75brd@suse.de> <20180210091543.ynypx4y3koz44g7y@angband.pl> <20180211105909.53bv5q363u7jgrsc@angband.pl> <6FB16384-7597-474E-91A1-1AF09201CEAC@gmail.com> <0C6EFF56-F135-480C-867C-B117F114A99F@amacapital.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <0C6EFF56-F135-480C-867C-B117F114A99F@amacapital.net> Sender: owner-linux-mm@kvack.org List-ID: To: Andy Lutomirski Cc: Mark D Rustad , Adam Borowski , Linus Torvalds , Joerg Roedel , Andy Lutomirski , Joerg Roedel , Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , X86 ML , LKML , Linux-MM , Dave Hansen , Josh Poimboeuf , Juergen Gross , Peter Zijlstra , Borislav Petkov , Jiri Kosina , Boris Ostrovsky , Brian Gerst , David Laight , Denys Vlasenko , Eduardo Valentin , Greg KH , Will Deacon , "Liguori, Anthony" , Daniel Gruss , Hugh Dickins , Kees Cook , Andrea Arcangeli , Waiman Long On Sun 2018-02-11 11:42:47, Andy Lutomirski wrote: >=20 >=20 > On Feb 11, 2018, at 9:40 AM, Mark D Rustad wrote: >=20 > >> On Feb 11, 2018, at 2:59 AM, Adam Borowski wrote: > >>=20 > >>> Does Debian make it easy to upgrade to a 64-bit kernel if you have a > >>> 32-bit install? > >>=20 > >> Quite easy, yeah. Crossgrading userspace is not for the faint of the = heart, > >> but changing just the kernel is fine. > >=20 > > ISTR that iscsi doesn't work when running a 64-bit kernel with a 32-bit= userspace. I remember someone offered kernel patches to fix it, but I thin= k they were rejected. I haven't messed with that stuff in many years, so pe= rhaps the userspace side now has accommodation for it. It might be somethin= g to check on. > >=20 It might make sense to retry those patches... if we want people to move to 64bit kernels, it makes sense to provide complete emulation for 32bit distros... > At the risk of suggesting heresy, should we consider removing x86_32 > support at some point? Heresy! We still support 486s. I don't know if anyone really uses them, but T40p is an acceptable machine to ssh from. X60 is still the machine I prefer for traveling. Fast enough if you don't compile, and nicer keyboard/screen than X220... Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org