From: Michal Hocko <mhocko@kernel.org>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>, Mel Gorman <mgorman@suse.de>,
Vlastimil Babka <vbabka@suse.cz>,
Andrea Arcangeli <aarcange@redhat.com>,
Jerome Glisse <jglisse@redhat.com>,
Reza Arbab <arbab@linux.vnet.ibm.com>,
Yasuaki Ishimatsu <yasu.isimatu@gmail.com>,
qiuxishi@huawei.com, Kani Toshimitsu <toshi.kani@hpe.com>,
slaoub@gmail.com, Joonsoo Kim <js1304@gmail.com>,
Andi Kleen <ak@linux.intel.com>,
David Rientjes <rientjes@google.com>,
Daniel Kiper <daniel.kiper@oracle.com>,
Igor Mammedov <imammedo@redhat.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
Balbir Singh <bsingharora@gmail.com>,
Dan Williams <dan.j.williams@intel.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Tobias Regnery <tobias.regnery@gmail.com>,
Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Subject: Re: [PATCH -v4 0/14] mm: make movable onlining suck less
Date: Fri, 9 Jun 2017 12:49:47 +0200 [thread overview]
Message-ID: <20170609104947.GD21764@dhcp22.suse.cz> (raw)
In-Reply-To: <CADZGycZvW1pTxt_NifTVmO3u_4694=JHe3k8xbESmhu4aonF-w@mail.gmail.com>
On Fri 09-06-17 17:51:24, Wei Yang wrote:
> Hi, Michal
>
> I am not that familiar with hotplug and trying to catch up the issue
> and your solution.
>
> One potential issue I found is we don't check the physical boundary
> when add_memory_resource().
>
> For example, on x86-64, only 64T physical memory is supported currently.
> Looks it is expanded after 5-level pagetable is introduced. While there is
> still some limitations on this. But we don't check the boundary I think.
>
> During the bootup, this is ensured by the max_pfn which is guaranteed to
> be under MAX_ARCH_PFN. I don't see some limitation on this when doing
> hotplug.
This might be true and I would have to double check but this rework
doesn't change anything in that regards. Or do I miss something?
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-06-09 10:49 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-15 8:58 Michal Hocko
2017-05-15 8:58 ` [PATCH 01/14] mm: remove return value from init_currently_empty_zone Michal Hocko
2017-05-15 8:58 ` [PATCH 02/14] mm, memory_hotplug: use node instead of zone in can_online_high_movable Michal Hocko
2017-05-15 8:58 ` [PATCH 03/14] mm: drop page_initialized check from get_nid_for_pfn Michal Hocko
2017-05-15 8:58 ` [PATCH 04/14] mm, memory_hotplug: get rid of is_zone_device_section Michal Hocko
2017-06-10 9:56 ` Wei Yang
2017-06-10 14:58 ` Wei Yang
2017-06-12 6:49 ` Michal Hocko
2017-06-14 6:17 ` Wei Yang
2017-06-14 6:12 ` Wei Yang
2017-06-14 6:32 ` Michal Hocko
2017-06-14 9:12 ` Wei Yang
2017-06-14 9:24 ` Michal Hocko
2017-06-15 1:02 ` Wei Yang
2017-05-15 8:58 ` [PATCH 05/14] mm, memory_hotplug: split up register_one_node Michal Hocko
2017-05-15 8:58 ` [PATCH 06/14] mm, memory_hotplug: consider offline memblocks removable Michal Hocko
2017-05-15 8:58 ` [PATCH 07/14] mm: consider zone which is not fully populated to have holes Michal Hocko
2017-05-18 16:14 ` Vlastimil Babka
2017-05-18 16:42 ` Michal Hocko
2017-05-19 7:21 ` Vlastimil Babka
2017-05-15 8:58 ` [PATCH 08/14] mm, compaction: skip over holes in __reset_isolation_suitable Michal Hocko
2017-05-19 7:23 ` Vlastimil Babka
2017-05-15 8:58 ` [PATCH 09/14] mm: __first_valid_page skip over offline pages Michal Hocko
2017-05-19 8:05 ` Vlastimil Babka
2017-05-15 8:58 ` [PATCH 10/14] mm, vmstat: skip reporting offline pages in pagetypeinfo Michal Hocko
2017-05-19 8:17 ` Vlastimil Babka
2017-05-15 8:58 ` [PATCH 11/14] mm, memory_hotplug: do not associate hotadded memory to zones until online Michal Hocko
2017-05-19 8:56 ` Vlastimil Babka
2017-06-16 4:20 ` Wei Yang
2017-06-16 8:05 ` Michal Hocko
2017-06-16 8:11 ` Wei Yang
2017-06-16 8:45 ` Michal Hocko
2017-06-16 9:11 ` Wei Yang
2017-06-25 0:14 ` Wei Yang
2017-06-26 5:38 ` Michal Hocko
2017-05-15 8:58 ` [PATCH 12/14] mm, memory_hotplug: replace for_device by want_memblock in arch_add_memory Michal Hocko
2017-05-15 8:58 ` [PATCH 13/14] mm, memory_hotplug: fix the section mismatch warning Michal Hocko
2017-05-15 8:58 ` [PATCH 14/14] mm, memory_hotplug: remove unused cruft after memory hotplug rework Michal Hocko
2017-06-09 9:51 ` [PATCH -v4 0/14] mm: make movable onlining suck less Wei Yang
2017-06-09 10:49 ` Michal Hocko [this message]
2017-06-10 2:20 ` Wei Yang
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