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Tue, 26 Jan 2021 18:11:20 -0800 (PST) Received: from localhost ([2409:10:2e40:5100:6e29:95ff:fe2d:8f34]) by smtp.gmail.com with ESMTPSA id y11sm346406pff.93.2021.01.26.18.11.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Jan 2021 18:11:19 -0800 (PST) Date: Wed, 27 Jan 2021 11:11:17 +0900 From: Sergey Senozhatsky To: John Ogness , Steven Rostedt , Timur Tabi , Vlastimil Babka Cc: Sergey Senozhatsky , Matthew Wilcox , Andrew Morton , linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, Petr Mladek , roman.fietze@magna.com, keescook@chromium.org, linux-mm@kvack.org, Akinobu Mita Subject: Re: [PATCH 0/2] introduce DUMP_PREFIX_UNHASHED for hex dumps Message-ID: References: <20210119014725.GH2260413@casper.infradead.org> <09c70d6b-c989-ca23-7ee8-b404bb0490f0@suse.cz> <083dd940-60c1-4cc8-fc89-8815b253d5c5@suse.cz> <20210126123912.23a5c3a1@gandalf.local.home> <20210126124032.0915f408@gandalf.local.home> <87mtwv8ptz.fsf@jogness.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87mtwv8ptz.fsf@jogness.linutronix.de> 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 (21/01/26 20:29), John Ogness wrote: > > On 2021-01-26, Steven Rostedt wrote: > > And even if we make this a boot time option, perhaps we should still > > include that nasty dmesg notice, which will let people know that the > > kernel has unhashed values. > > +1 > > The notice would probably be the main motivation for distros/users to > avoid unhashed values unless truly debugging. Which is what we want. +1 for boot param with a scary name and dmesg WARNING WARNING WARNING that should look even scarier. Timur, do you have time to take a look and submit a patch? -ss