Return-Path: Date: Mon, 28 Jan 2019 10:25:49 +0100 From: Michal Hocko Subject: Re: [PATCH 5/5] dax: "Hotplug" persistent memory for use like normal RAM Message-ID: <20190128092549.GF18811@dhcp22.suse.cz> References: <20190124231441.37A4A305@viggo.jf.intel.com> <20190124231448.E102D18E@viggo.jf.intel.com> <0852310e-41dc-dc96-2da5-11350f5adce6@oracle.com> <5A90DA2E42F8AE43BC4A093BF067884825733A5B@SHSMSX104.ccr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Dan Williams Cc: Jane Chu , "Verma, Vishal L" , "Du, Fan" , "linux-kernel@vger.kernel.org" , "bp@suse.de" , "linux-mm@kvack.org" , "dave.hansen@linux.intel.com" , "tiwai@suse.de" , "akpm@linux-foundation.org" , "linux-nvdimm@lists.01.org" , "jglisse@redhat.com" , "zwisler@kernel.org" , "baiyaowei@cmss.chinamobile.com" , "thomas.lendacky@amd.com" , "Wu, Fengguang" , "Huang, Ying" , "bhelgaas@google.com" List-ID: On Fri 25-01-19 11:15:08, Dan Williams wrote: [...] > However, we should consider this along with the userspace enabling to > control which device-dax instances are set aside for hotplug. It would > make sense to have a "clear errors before hotplug" configuration > option. I am not sure I understand. Do you mean to clear HWPoison when the memory is hotadded (add_pages) or onlined (resp. move_pfn_range_to_zone)? -- Michal Hocko SUSE Labs