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Date: Fri, 22 Sep 2017 15:31:57 -0500 From: Reza Arbab <arbab@...ux.vnet.ibm.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Michal Hocko <mhocko@...e.com>, Jan Kara <jack@...e.cz>, Ross Zwisler <ross.zwisler@...ux.intel.com>, "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, Lorenzo Stoakes <lstoakes@...il.com>, Dave Jiang <dave.jiang@...el.com>, Jérôme Glisse <jglisse@...hat.com>, Matthew Wilcox <willy@...ux.intel.com>, Hugh Dickins <hughd@...gle.com>, Huang Ying <ying.huang@...el.com>, Ingo Molnar <mingo@...nel.org>, "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>, James Morse <james.morse@....com>, Naoya Horiguchi <n-horiguchi@...jp.nec.com>, Minchan Kim <minchan@...nel.org>, Johannes Weiner <hannes@...xchg.org>, Will Deacon <will.deacon@....com>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] mm/device-public-memory: Enable move_pages() to stat device memory On Fri, Sep 22, 2017 at 08:13:56PM +0000, Reza Arbab wrote: >The move_pages() syscall can be used to find the numa node where a page >currently resides. This is not working for device public memory pages, >which erroneously report -EFAULT (unmapped or zero page). Argh. Please disregard this patch. My test setup has a chunk of system memory carved out as pretend device public memory, to experiment with. Of course the real thing has no numa node! Apologies all, it's been a long day. -- Reza Arbab
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