From: Reza Arbab <arbab@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Michal Hocko" <mhocko@suse.com>, "Jan Kara" <jack@suse.cz>,
"Ross Zwisler" <ross.zwisler@linux.intel.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
"Lorenzo Stoakes" <lstoakes@gmail.com>,
"Dave Jiang" <dave.jiang@intel.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Matthew Wilcox" <willy@linux.intel.com>,
"Hugh Dickins" <hughd@google.com>,
"Huang Ying" <ying.huang@intel.com>,
"Ingo Molnar" <mingo@kernel.org>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
"James Morse" <james.morse@arm.com>,
"Naoya Horiguchi" <n-horiguchi@ah.jp.nec.com>,
"Minchan Kim" <minchan@kernel.org>,
"Johannes Weiner" <hannes@cmpxchg.org>,
"Will Deacon" <will.deacon@arm.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/device-public-memory: Enable move_pages() to stat device memory
Date: Fri, 22 Sep 2017 15:31:57 -0500 [thread overview]
Message-ID: <20170922203157.4txavkwmvyh2ufmd@arbab-laptop.localdomain> (raw)
In-Reply-To: <1506111236-28975-1-git-send-email-arbab@linux.vnet.ibm.com>
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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next prev parent reply other threads:[~2017-09-22 20:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-22 20:13 Reza Arbab
2017-09-22 20:31 ` Reza Arbab [this message]
2017-09-22 21:01 ` Reza Arbab
2017-09-26 13:37 ` Michal Hocko
2017-09-26 14:47 ` Reza Arbab
2017-09-26 16:19 ` Jerome Glisse
2017-09-26 16:32 ` Michal Hocko
2017-09-26 18:35 ` Reza Arbab
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