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From: Christoph Hellwig <hch@lst.de>
To: Petr Mladek <pmladek@suse.com>
Cc: Christoph Hellwig <hch@lst.de>,
	Frederic Barrat <fbarrat@linux.ibm.com>,
	Andrew Donnellan <ajd@linux.ibm.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Jessica Yu <jeyu@kernel.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	Jiri Kosina <jikos@kernel.org>, Miroslav Benes <mbenes@suse.cz>,
	Joe Lawrence <joe.lawrence@redhat.com>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Michal Marek <michal.lkml@markovi.net>,
	linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	dri-devel@lists.freedesktop.org, live-patching@vger.kernel.org,
	linux-kbuild@vger.kernel.org
Subject: Re: [PATCH 03/13] livepatch: refactor klp_init_object
Date: Thu, 28 Jan 2021 17:24:46 +0100	[thread overview]
Message-ID: <20210128162446.GA3883@lst.de> (raw)
In-Reply-To: <20210128162240.GA3417@lst.de>

On Thu, Jan 28, 2021 at 05:22:40PM +0100, Christoph Hellwig wrote:
> > We need to either update the function description or keep this check.
> > 
> > I prefer to keep the check. The function does the right thing also
> > for the object "vmlinux". Also the livepatch code includes many
> > similar paranoid checks that makes the code less error prone
> > against any further changes.
> 
> Well, the check is in the caller now where we have a conditional for
> it.  So I'd be tempted to either update the comment, or just drop the
> patch.

Also even without the check I think it will do the right thing when
called for vmlinux given that it simplify won't find a module called
vmlinux..

WARNING: multiple messages have this Message-ID
From: Christoph Hellwig <hch@lst.de>
To: Petr Mladek <pmladek@suse.com>
Cc: Jiri Kosina <jikos@kernel.org>,
	Andrew Donnellan <ajd@linux.ibm.com>,
	linux-kbuild@vger.kernel.org, David Airlie <airlied@linux.ie>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	linux-kernel@vger.kernel.org, Maxime Ripard <mripard@kernel.org>,
	live-patching@vger.kernel.org,
	Michal Marek <michal.lkml@markovi.net>,
	Joe Lawrence <joe.lawrence@redhat.com>,
	dri-devel@lists.freedesktop.org,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Jessica Yu <jeyu@kernel.org>,
	Frederic Barrat <fbarrat@linux.ibm.com>,
	Daniel Vetter <daniel@ffwll.ch>, Miroslav Benes <mbenes@suse.cz>,
	linuxppc-dev@lists.ozlabs.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 03/13] livepatch: refactor klp_init_object
Date: Thu, 28 Jan 2021 17:24:46 +0100	[thread overview]
Message-ID: <20210128162446.GA3883@lst.de> (raw)
In-Reply-To: <20210128162240.GA3417@lst.de>

On Thu, Jan 28, 2021 at 05:22:40PM +0100, Christoph Hellwig wrote:
> > We need to either update the function description or keep this check.
> > 
> > I prefer to keep the check. The function does the right thing also
> > for the object "vmlinux". Also the livepatch code includes many
> > similar paranoid checks that makes the code less error prone
> > against any further changes.
> 
> Well, the check is in the caller now where we have a conditional for
> it.  So I'd be tempted to either update the comment, or just drop the
> patch.

Also even without the check I think it will do the right thing when
called for vmlinux given that it simplify won't find a module called
vmlinux..

  reply	other threads:[~2021-01-28 16:25 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-21  7:49 module loader dead code removal and cleanusp Christoph Hellwig
2021-01-21  7:49 ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 01/13] powerpc/powernv: remove get_cxl_module Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  9:09   ` Andrew Donnellan
2021-01-21  9:09     ` Andrew Donnellan
2021-01-21  9:09     ` Andrew Donnellan
2021-01-21  7:49 ` [PATCH 02/13] module: add a module_loaded helper Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  9:59   ` Christophe Leroy
2021-01-21 10:13     ` David Laight
2021-01-21 10:17       ` Christophe Leroy
2021-01-21 10:00   ` Christophe Leroy
2021-01-21 10:00     ` Christophe Leroy
2021-01-21 17:11     ` Christoph Hellwig
2021-01-21 17:11       ` Christoph Hellwig
2021-01-21 17:44       ` David Laight
2021-01-21 17:44         ` David Laight
2021-01-21 17:44         ` David Laight
2021-01-21  7:49 ` [PATCH 03/13] livepatch: refactor klp_init_object Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-27 12:58   ` Petr Mladek
2021-01-27 12:58     ` Petr Mladek
2021-01-27 12:58     ` Petr Mladek
2021-01-28 16:22     ` Christoph Hellwig
2021-01-28 16:22       ` Christoph Hellwig
2021-01-28 16:24       ` Christoph Hellwig [this message]
2021-01-28 16:24         ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 04/13] livepatch: move klp_find_object_module to module.c Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21 21:45   ` Josh Poimboeuf
2021-01-21 21:45     ` Josh Poimboeuf
2021-01-21 21:45     ` Josh Poimboeuf
2021-01-26 14:25   ` Jessica Yu
2021-01-26 14:25     ` Jessica Yu
2021-01-26 14:25     ` Jessica Yu
2021-01-27 11:55     ` Petr Mladek
2021-01-27 11:55       ` Petr Mladek
2021-01-27 11:55       ` Petr Mladek
2021-01-21  7:49 ` [PATCH 05/13] kallsyms: refactor {,module_}kallsyms_on_each_symbol Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 06/13] kallsyms: only build {,module_}kallsyms_on_each_symbol when required Christoph Hellwig
2021-01-21  7:49   ` [PATCH 06/13] kallsyms: only build {, module_}kallsyms_on_each_symbol " Christoph Hellwig
2021-01-21  7:49 ` [PATCH 07/13] module: mark module_mutex static Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 08/13] drm: remove drm_fb_helper_modinit Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  8:25   ` Daniel Vetter
2021-01-21  8:25     ` Daniel Vetter
2021-01-21  8:25     ` Daniel Vetter
2021-01-21  8:28     ` Christoph Hellwig
2021-01-21  8:28       ` Christoph Hellwig
2021-01-21  8:39       ` Daniel Vetter
2021-01-21  8:39         ` Daniel Vetter
2021-01-21  8:39         ` Daniel Vetter
2021-01-21  7:49 ` [PATCH 09/13] module: remove each_symbol_in_section Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 10/13] module: merge each_symbol_section into find_symbol Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 11/13] module: pass struct find_symbol_args to find_symbol Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 12/13] module: remove EXPORT_SYMBOL_GPL_FUTURE Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-21  7:49 ` [PATCH 13/13] module: remove EXPORY_UNUSED_SYMBOL* Christoph Hellwig
2021-01-21  7:49   ` Christoph Hellwig
2021-01-27 13:49   ` Jessica Yu
2021-01-27 13:49     ` Jessica Yu
2021-01-27 13:49     ` Jessica Yu
2021-01-28 16:09     ` Christoph Hellwig
2021-01-28 16:09       ` Christoph Hellwig

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