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Hallyn" , Souptick Joarder , Marco Elver , kernel-hardening@lists.openwall.com, linux-mm@kvack.org, linux-security-module@vger.kernel.org Subject: Re: [PATCH v5 2/3] mm: init: report memory auto-initialization features at boot time Message-Id: <20190531181832.e7c3888870ce9e50db9f69e6@linux-foundation.org> In-Reply-To: <20190529123812.43089-3-glider@google.com> References: <20190529123812.43089-1-glider@google.com> <20190529123812.43089-3-glider@google.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, 29 May 2019 14:38:11 +0200 Alexander Potapenko wrote: > Print the currently enabled stack and heap initialization modes. > > The possible options for stack are: > - "all" for CONFIG_INIT_STACK_ALL; > - "byref_all" for CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL; > - "byref" for CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF; > - "__user" for CONFIG_GCC_PLUGIN_STRUCTLEAK_USER; > - "off" otherwise. > > Depending on the values of init_on_alloc and init_on_free boottime > options we also report "heap alloc" and "heap free" as "on"/"off". Why? Please fully describe the benefit to users so that others can judge the desirability of the patch. And so they can review it effectively, etc. Always! > In the init_on_free mode initializing pages at boot time may take some > time, so print a notice about that as well. How much time?