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From: Pekka Enberg <penberg@iki.fi>
To: Sasha Levin <sasha.levin@oracle.com>, linux-kernel@vger.kernel.org
Cc: Vladimir Davydov <vdavydov@parallels.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	SUPERH <linux-sh@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Jianyu Zhan <nasa4836@gmail.com>,
	Paul Mackerras <paulus@samba.org>, Pavel Machek <pavel@ucw.cz>,
	Miklos Szeredi <mszeredi@suse.cz>,
	Christoph Lameter <cl@linux.com>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	"open list:GENERIC INCLUDE/A..." <linux-arch@vger.kernel.org>,
	Andi Kleen <ak@linux.intel.com>,
	Russell King <linux@arm.linux.org.uk>,
	Jingoo Han <jg1.han@samsung.com>,
	James Morris <jmorris@namei.org>,
	Chris Bainbridge <chris.bainbridge@gmail.com>,
	Antti Palosaari <crope@iki.fi>, Mel Gorman <mgorman@suse.de>,
	Ritesh Harjani <ritesh.harjani@gmail.com>,
	Shaohua Li <shli@kernel.org>,
	Alexander Duyck <alexander.h.duyck@intel.com>,
	Wang Nan <wangnan0@huawei.com>,
	Jiri
Subject: Re: [PATCH] mm: kill kmemcheck
Date: Thu, 12 Mar 2015 09:07:36 +0200	[thread overview]
Message-ID: <55013B38.6040100@iki.fi> (raw)
In-Reply-To: <1426074547-21888-1-git-send-email-sasha.levin@oracle.com>

Hi Sasha,

On 3/11/15 1:43 PM, Sasha Levin wrote:
> As discussed on LSF/MM, kill kmemcheck.
>
> KASan is a replacement that is able to work without the limitation of
> kmemcheck (single CPU, slow). KASan is already upstream.
>
> We are also not aware of any users of kmemcheck (or users who don't consider
> KASan as a suitable replacement).
>
> I've build tested it using all[yes,no,mod]config and fuzzed a bit with this
> patch applied, didn't notice any bad behaviour.
>
> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

Can you elaborate on what exactly was discussed at LSF/MM? Preferably in 
the commit log. ;-)

- Pekka
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WARNING: multiple messages have this Message-ID (diff)
From: Pekka Enberg <penberg@iki.fi>
To: Sasha Levin <sasha.levin@oracle.com>, linux-kernel@vger.kernel.org
Cc: Vladimir Davydov <vdavydov@parallels.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	SUPERH <linux-sh@vger.kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Jianyu Zhan <nasa4836@gmail.com>,
	Paul Mackerras <paulus@samba.org>, Pavel Machek <pavel@ucw.cz>,
	Miklos Szeredi <mszeredi@suse.cz>,
	Christoph Lameter <cl@linux.com>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	"open list:GENERIC INCLUDE/A..." <linux-arch@vger.kernel.org>,
	Andi Kleen <ak@linux.intel.com>,
	Russell King <linux@arm.linux.org.uk>,
	Jingoo Han <jg1.han@samsung.com>,
	James Morris <jmorris@namei.org>,
	Chris Bainbridge <chris.bainbridge@gmail.com>,
	Antti Palosaari <crope@iki.fi>, Mel Gorman <mgorman@suse.de>,
	Ritesh Harjani <ritesh.harjani@gmail.com>,
	Shaohua Li <shli@kernel.org>,
	Alexander Duyck <alexander.h.duyck@intel.com>,
	Wang Nan <wangnan0@huawei.com>, Jiri Pirko <jiri@resnulli.us>,
	Daniel J Blueman <daniel@numascale.com>,
	Rusty Russell <rusty@rustcorp.com.au>, Jens Axboe <axboe@fb.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Thomas Gleixner <tglx@linutronix.de>,
	Konstantin Khlebnikov <koct9i@gmail.com>,
	Willem de Bruijn <willemb@google.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Rabin Vincent <rabin@rab.in>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
	Jiri Kosina <jkosina@suse.cz>, Tejun Heo <tj@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Patrick McHardy <kaber@trash.net>,
	Christoffer Dall <christoffer.dall@linaro.org>,
	Mark Rutland <mark.rutland@arm.com>,
	DOCUMENTATION <linux-doc@vger.kernel.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Eric Dumazet <edumazet@google.com>,
	Jungseung Lee <js07.lee@gmail.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Qiaowei Ren <qiaowei.ren@intel.com>,
	Prarit Bhargava <prarit@redhat.com>,
	bob picco <bpicco@meloft.net>,
	Sungjinn Chung <sungjinn.chung@samsung.com>,
	Quentin Lambert <lambert.quentin@gmail.com>,
	Hugh Dickins <hughd@google.com>,
	Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>,
	Kukjin Kim <kgene@kernel.org>,
	Pranith Kumar <bobby.prani@gmail.com>,
	Tom Herbert <therbert@google.com>,
	CRYPTO API <linux-crypto@vger.kernel.org>,
	Rik van Riel <riel@redhat.com>,
	Johannes Berg <johannes.berg@intel.com>,
	Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
	Eyal Perry <eyalpe@mellanox.com>, Joe Perches <joe@perches.com>,
	chishanmingshen <chishanmingshen@gmail.com>,
	Cyrill Gorcunov <gorcunov@openvz.org>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Yinghai Lu <yinghai@kernel.org>,
	Steven Honeyman <stevenhoneyman@gmail.com>,
	ARM PORT <linux-arm-kernel@lists.infradead.org>,
	Theodore Ts'o <tytso@mit.edu>, Pekka Enberg <penberg@kernel.org>,
	David Vrabel <david.vrabel@citrix.com>,
	David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Michal Hocko <mhocko@suse.cz>,
	Paul Gortmaker <paul.gortmaker@windriver.com>,
	Jan Beulich <JBeulich@suse.com>,
	"moderated list:OPENRISC ARCHITEC..." <linux@lists.openrisc.net>,
	Guan Xuetao <gxt@mprc.pku.edu.cn>,
	Sam Ravnborg <sam@ravnborg.org>, Jonathan Corbet <corbet@lwn.net>,
	Andrey Ryabinin <a.ryabinin@samsung.com>,
	Dexuan Cui <decui@microsoft.com>,
	Vegard Nossum <vegardno@ifi.uio.no>,
	Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
	Suresh Siddha <sbsiddha@gmail.com>,
	Josh Triplett <josh@joshtriplett.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Borislav Petkov <bp@alien8.de>,
	Andrey Konovalov <adech.fo@gmail.com>,
	Scott Wood <scottwood@freescale.com>,
	Bryan O'Donoghue <pure.logic@nexus-software.ie>,
	Dan Streetman <ddstreet@ieee.org>,
	Oleg Nesterov <oleg@redhat.com>,
	Andy Lutomirski <luto@amacapital.net>,
	Hannes Frederic Sowa <hannes@stressinduktion.org>,
	linux-fsdevel@vger.kernel.org,
	"David S. Miller" <davem@davemloft.net>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	MEMORY MANAGEMENT <linux-mm@kvack.org>,
	Davidlohr Bueso <davidlohr@hp.com>,
	Paul Cassella <cassella@cray.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"open list:SPARC + UltraSPAR..." <sparclinux@vger.kernel.org>,
	Xishi Qiu <qiuxishi@huawei.com>,
	Alexei Starovoitov <ast@plumgrid.com>,
	Jonas Bonn <jonas@southpole.se>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Richard Weinberger <richard@nod.at>,
	"maintainer:X86 ARCHITECTURE..." <x86@kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Aaron Tomlin <atomlin@redhat.com>,
	Greg Thelen <gthelen@google.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Fabian Frederick <fabf@skynet.be>, Michal Marek <mmarek@suse.cz>,
	Jungseok Lee <jays.lee@samsung.com>,
	Dave Jones <davej@redhat.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Vlastimil Babka <vbabka@suse.cz>, Juergen Gross <jgross@suse.com>,
	Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
	"open list:NETWORKING \[GENERAL\]" <netdev@vger.kernel.org>,
	Daniel Borkmann <dborkman@redhat.com>,
	Horia Geanta <horia.geanta@freescale.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	"open list:LINUX FOR POWERPC..." <linuxppc-dev@lists.ozlabs.org>,
	Anton Blanchard <anton@samba.org>
Subject: Re: [PATCH] mm: kill kmemcheck
Date: Thu, 12 Mar 2015 09:07:36 +0200	[thread overview]
Message-ID: <55013B38.6040100@iki.fi> (raw)
In-Reply-To: <1426074547-21888-1-git-send-email-sasha.levin@oracle.com>

Hi Sasha,

On 3/11/15 1:43 PM, Sasha Levin wrote:
> As discussed on LSF/MM, kill kmemcheck.
>
> KASan is a replacement that is able to work without the limitation of
> kmemcheck (single CPU, slow). KASan is already upstream.
>
> We are also not aware of any users of kmemcheck (or users who don't consider
> KASan as a suitable replacement).
>
> I've build tested it using all[yes,no,mod]config and fuzzed a bit with this
> patch applied, didn't notice any bad behaviour.
>
> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

Can you elaborate on what exactly was discussed at LSF/MM? Preferably in 
the commit log. ;-)

- Pekka

  parent reply	other threads:[~2015-03-12  7:07 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-11 11:43 [PATCH] mm: kill kmemcheck Sasha Levin
2015-03-11 11:43 ` Sasha Levin
2015-03-11 11:43 ` Sasha Levin
2015-03-11 12:19 ` Steven Rostedt
2015-03-11 12:19   ` Steven Rostedt
2015-03-11 12:34   ` Sasha Levin
2015-03-11 12:34     ` Sasha Levin
2015-03-11 12:40     ` Steven Rostedt
2015-03-11 12:40       ` Steven Rostedt
2015-03-11 13:39       ` Sasha Levin
2015-03-11 13:39         ` Sasha Levin
2015-03-11 14:23         ` Dave Jones
2015-03-11 14:23           ` Dave Jones
2015-03-11 14:26         ` Steven Rostedt
2015-03-11 14:26           ` Steven Rostedt
2015-03-11 14:43           ` Sasha Levin
2015-03-11 14:43             ` Sasha Levin
2015-03-11 14:52             ` Steven Rostedt
2015-03-11 14:52               ` Steven Rostedt
2015-03-17  1:48               ` Sasha Levin
2015-03-17  1:48                 ` Sasha Levin
2015-03-17  2:33                 ` Steven Rostedt
2015-03-17  2:33                   ` Steven Rostedt
2015-03-11 14:35         ` Boaz Harrosh
2015-03-11 14:35           ` Boaz Harrosh
2015-03-11 17:20         ` David Miller
2015-03-11 17:20           ` David Miller
2015-03-11 17:25           ` Sasha Levin
2015-03-11 17:25             ` Sasha Levin
2015-03-11 18:44             ` David Miller
2015-03-11 18:44               ` David Miller
2015-03-11 20:01               ` Andrey Ryabinin
2015-03-11 20:01                 ` Andrey Ryabinin
2015-03-11 20:48                 ` David Miller
2015-03-11 20:48                   ` David Miller
2015-03-12  0:57 ` Rusty Russell
2015-03-12  0:57   ` Rusty Russell
2015-03-12  0:57   ` Rusty Russell
2015-03-12  3:49 ` Michael Ellerman
2015-03-12  3:49   ` Michael Ellerman
2015-03-12  3:49   ` Michael Ellerman
2015-03-12 12:40   ` Sasha Levin
2015-03-12 12:40     ` Sasha Levin
2015-03-12 18:11     ` David Miller
2015-03-12 13:47   ` Steven Rostedt
2015-03-12 13:47     ` Steven Rostedt
2015-03-12 13:47     ` Steven Rostedt
2015-03-12  7:07 ` Pekka Enberg [this message]
2015-03-12  7:07   ` Pekka Enberg
2015-03-12 12:51   ` Sasha Levin
2015-03-12 12:51     ` Sasha Levin
2015-03-12 13:00   ` Jonathan Corbet
2015-03-12 13:00     ` Jonathan Corbet
2015-03-12 13:00     ` Jonathan Corbet

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