From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id B1FD021AE30DB for ; Tue, 25 Sep 2018 13:27:42 -0700 (PDT) Subject: Re: [PATCH v5 2/4] mm: Provide kernel parameter to allow disabling page init poisoning References: <20180925200551.3576.18755.stgit@localhost.localdomain> <20180925201921.3576.84239.stgit@localhost.localdomain> From: Dave Hansen Message-ID: <13285e05-fb90-b948-6f96-777f94079657@intel.com> Date: Tue, 25 Sep 2018 13:26:39 -0700 MIME-Version: 1.0 In-Reply-To: <20180925201921.3576.84239.stgit@localhost.localdomain> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Alexander Duyck , linux-mm@kvack.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org Cc: pavel.tatashin@microsoft.com, mhocko@suse.com, jglisse@redhat.com, rppt@linux.vnet.ibm.com, mingo@kernel.org, kirill.shutemov@linux.intel.com List-ID: On 09/25/2018 01:20 PM, Alexander Duyck wrote: > + vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y. > + May slow down system boot speed, especially when > + enabled on systems with a large amount of memory. > + All options are enabled by default, and this > + interface is meant to allow for selectively > + enabling or disabling specific virtual memory > + debugging features. > + > + Available options are: > + P Enable page structure init time poisoning > + - Disable all of the above options Can we have vm_debug=off for turning things off, please? That seems to be pretty standard. Also, we need to document the defaults. I think the default is "all debug options are enabled", but it would be nice to document that. _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm