From: Michal Hocko <mhocko@kernel.org>
To: David Hildenbrand <david@redhat.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org,
Dan Williams <dan.j.williams@intel.com>,
Wei Yang <richard.weiyang@gmail.com>,
Igor Mammedov <imammedo@redhat.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Oscar Salvador <osalvador@suse.com>
Subject: Re: [PATCH v3 02/11] s390x/mm: Fail when an altmap is used for arch_add_memory()
Date: Mon, 1 Jul 2019 14:46:28 +0200 [thread overview]
Message-ID: <20190701124628.GT6376@dhcp22.suse.cz> (raw)
In-Reply-To: <20190701074306.GC6376@dhcp22.suse.cz>
On Mon 01-07-19 09:43:06, Michal Hocko wrote:
> On Mon 27-05-19 13:11:43, David Hildenbrand wrote:
> > ZONE_DEVICE is not yet supported, fail if an altmap is passed, so we
> > don't forget arch_add_memory()/arch_remove_memory() when unlocking
> > support.
>
> Why do we need this? Sure ZONE_DEVICE is not supported for s390 and so
> might be the case for other arches which support hotplug. I do not see
> much point in adding warning to each of them.
I would drop this one. If there is a strong reason to have something
like that it should come with a better explanation and it can be done on
top.
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-07-01 12:46 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 11:11 [PATCH v3 00/11] mm/memory_hotplug: Factor out memory block devicehandling David Hildenbrand
2019-05-27 11:11 ` [PATCH v3 01/11] mm/memory_hotplug: Simplify and fix check_hotplug_memory_range() David Hildenbrand
2019-05-30 17:53 ` Pavel Tatashin
2019-06-10 16:46 ` Oscar Salvador
2019-07-01 7:42 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 02/11] s390x/mm: Fail when an altmap is used for arch_add_memory() David Hildenbrand
2019-06-10 17:07 ` Oscar Salvador
2019-07-01 7:43 ` Michal Hocko
2019-07-01 12:46 ` Michal Hocko [this message]
2019-07-15 10:51 ` David Hildenbrand
2019-07-19 6:45 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 03/11] s390x/mm: Implement arch_remove_memory() David Hildenbrand
2019-07-01 7:45 ` Michal Hocko
2019-07-01 12:47 ` Michal Hocko
2019-07-15 10:45 ` David Hildenbrand
2019-05-27 11:11 ` [PATCH v3 04/11] arm64/mm: Add temporary arch_remove_memory() implementation David Hildenbrand
2019-06-03 21:41 ` Wei Yang
2019-06-04 6:56 ` David Hildenbrand
2019-06-04 17:36 ` Robin Murphy
2019-06-04 17:51 ` David Hildenbrand
2019-07-01 12:48 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 05/11] drivers/base/memory: Pass a block_id to init_memory_block() David Hildenbrand
2019-06-03 21:49 ` Wei Yang
2019-06-04 6:56 ` David Hildenbrand
2019-07-01 7:56 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 06/11] mm/memory_hotplug: Allow arch_remove_pages() without CONFIG_MEMORY_HOTREMOVE David Hildenbrand
2019-05-30 17:56 ` Pavel Tatashin
2019-06-03 22:15 ` Wei Yang
2019-06-04 6:59 ` David Hildenbrand
2019-06-04 8:31 ` Wei Yang
2019-06-04 9:00 ` David Hildenbrand
2019-07-01 8:01 ` Michal Hocko
2019-07-01 12:51 ` Michal Hocko
2019-07-15 10:54 ` David Hildenbrand
2019-07-19 6:06 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 07/11] mm/memory_hotplug: Create memory block devices after arch_add_memory() David Hildenbrand
2019-05-30 21:07 ` Pavel Tatashin
2019-06-04 21:42 ` Wei Yang
2019-06-05 8:58 ` David Hildenbrand
2019-06-05 10:58 ` David Hildenbrand
2019-06-05 21:22 ` Wei Yang
2019-06-05 21:50 ` David Hildenbrand
2019-07-01 8:14 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 08/11] mm/memory_hotplug: Drop MHP_MEMBLOCK_API David Hildenbrand
2019-06-04 21:47 ` Wei Yang
2019-07-01 8:15 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 09/11] mm/memory_hotplug: Remove memory block devices before arch_remove_memory() David Hildenbrand
2019-06-04 22:07 ` Wei Yang
2019-06-05 9:00 ` David Hildenbrand
2019-07-01 8:41 ` Michal Hocko
2019-07-15 10:58 ` David Hildenbrand
2019-05-27 11:11 ` [PATCH v3 10/11] mm/memory_hotplug: Make unregister_memory_block_under_nodes() never fail David Hildenbrand
2019-06-05 21:21 ` Wei Yang
2019-06-10 16:56 ` Oscar Salvador
2019-07-01 8:51 ` Michal Hocko
2019-07-01 9:36 ` Oscar Salvador
2019-07-01 10:27 ` Michal Hocko
2019-07-15 11:10 ` David Hildenbrand
2019-07-16 8:46 ` Oscar Salvador
2019-07-16 11:08 ` David Hildenbrand
2019-07-16 11:09 ` David Hildenbrand
2019-07-19 6:05 ` Michal Hocko
2019-05-27 11:11 ` [PATCH v3 11/11] mm/memory_hotplug: Remove "zone" parameter from sparse_remove_one_section David Hildenbrand
2019-06-05 21:21 ` Wei Yang
2019-06-10 16:58 ` Oscar Salvador
2019-07-01 8:52 ` Michal Hocko
2019-06-03 21:21 ` [PATCH v3 00/11] mm/memory_hotplug: Factor out memory block devicehandling Wei Yang
2019-06-03 21:40 ` David Hildenbrand
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