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[195.135.220.15]) by mx.google.com with ESMTPS id z40si1402805edz.338.2019.02.26.07.18.57 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 26 Feb 2019 07:18:58 -0800 (PST) Received-SPF: softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) client-ip=195.135.220.15; Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) smtp.mailfrom=mhocko@kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 51C31AE83; Tue, 26 Feb 2019 15:18:57 +0000 (UTC) Date: Tue, 26 Feb 2019 16:18:56 +0100 From: Michal Hocko To: Robin Murphy Cc: David Hildenbrand , linux-mm@kvack.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, rafael@kernel.org, akpm@linux-foundation.org, osalvador@suse.de Subject: Re: [PATCH v2] mm/memory-hotplug: Add sysfs hot-remove trigger Message-ID: <20190226151856.GE10588@dhcp22.suse.cz> References: <49ef5e6c12f5ede189419d4dcced5dc04957c34d.1549906631.git.robin.murphy@arm.com> <20190212083310.GM15609@dhcp22.suse.cz> <20190212151146.GA15609@dhcp22.suse.cz> <1ea6a40d-be86-6ccc-c728-fa8effbd5a8e@redhat.com> <8793f49d-756f-960d-9b26-7eaedfccd90e@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8793f49d-756f-960d-9b26-7eaedfccd90e@arm.com> User-Agent: Mutt/1.10.1 (2018-07-13) 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 26-02-19 15:12:40, Robin Murphy wrote: [...] > The back of my mind is still ticking over trying to think up a really nice > design for a self-contained debugfs or module-parameter interface completely > independent of ARCH_MEMORY_PROBE - I'll probably keep using this hack > locally to finish off the arm64 hot-remove stuff, but once that's done (or > if inspiration strikes in the meantime) then I'll try to come back with a > prototype of the developer interface that I'd find most useful. Would it make more sense to add a module to the testing machinery? -- Michal Hocko SUSE Labs