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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id t1sm15518010pgh.88.2020.03.24.11.24.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 11:24:18 -0700 (PDT) Date: Tue, 24 Mar 2020 11:24:17 -0700 From: Kees Cook To: Vlastimil Babka Cc: Luis Chamberlain , Iurii Zaikin , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, linux-mm@kvack.org, Ivan Teterevkov , Michal Hocko , David Rientjes , Matthew Wilcox , "Eric W . Biederman" Subject: Re: [RFC] kernel/sysctl: support setting sysctl parameters from kernel command line Message-ID: <202003241121.44E725B@keescook> References: <20200317132105.24555-1-vbabka@suse.cz> <202003171421.5DCADF51@keescook> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Tue, Mar 24, 2020 at 05:50:49PM +0100, Vlastimil Babka wrote: > On 3/17/20 10:29 PM, Kees Cook wrote: > > mm.transparent_hugepage.enabled > > Hm, transparent_hugepage is in sysfs (/sys/kernel/mm), but not sysctl, at least > in my case the sysctl tool doesn't list it. Yours does? Yay for consistency. Oh, whoops! That was my mistake; my eyes skipped out of /proc/sys ;) > > I like the idea if just for having to build less boiler plate for > > supporting things that I've had to plumb to both boot_params and sysctl. > > :) > > Thanks, I will pursue the idea further then :) Awesome! I've wanted this for a long time but never had the time to give it a try. :) -- Kees Cook