From: Andrew Morton <akpm@linux-foundation.org>
To: Jerome Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>,
Balbir Singh <bsingharora@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
David Nellans <dnellans@nvidia.com>,
Evgeny Baskakov <ebaskakov@nvidia.com>,
Mark Hairgrove <mhairgrove@nvidia.com>,
Sherry Cheung <SCheung@nvidia.com>,
Subhash Gutti <sgutti@nvidia.com>
Subject: Re: [HMM 07/16] mm/migrate: new memory migration helper for use with device memory v4
Date: Thu, 16 Mar 2017 20:32:53 -0700 [thread overview]
Message-ID: <20170316203253.755ab6180affcfa3a7a9a1ba@linux-foundation.org> (raw)
In-Reply-To: <2057035918.7910419.1489715543920.JavaMail.zimbra@redhat.com>
On Thu, 16 Mar 2017 21:52:23 -0400 (EDT) Jerome Glisse <jglisse@redhat.com> wrote:
> The original intention was for it to be 64bit only, 32bit is a dying
> species and before splitting out hmm_ prefix from this code and moving
> it to be generic it was behind a 64bit flag.
>
> If latter one someone really care about 32bit we can only move to u64
I think that's the best compromise. If someone wants this on 32-bit
then they're free to get it working. That "someone" will actually be
able to test it, which you clearly won't be doing!
However, please do check that the impact of this patchset on 32-bit's
`size vmlinux' is minimal. Preferably zero.
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Jerome Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>,
Balbir Singh <bsingharora@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
David Nellans <dnellans@nvidia.com>,
Evgeny Baskakov <ebaskakov@nvidia.com>,
Mark Hairgrove <mhairgrove@nvidia.com>,
Sherry Cheung <SCheung@nvidia.com>,
Subhash Gutti <sgutti@nvidia.com>
Subject: Re: [HMM 07/16] mm/migrate: new memory migration helper for use with device memory v4
Date: Thu, 16 Mar 2017 20:32:53 -0700 [thread overview]
Message-ID: <20170316203253.755ab6180affcfa3a7a9a1ba@linux-foundation.org> (raw)
In-Reply-To: <2057035918.7910419.1489715543920.JavaMail.zimbra@redhat.com>
On Thu, 16 Mar 2017 21:52:23 -0400 (EDT) Jerome Glisse <jglisse@redhat.com> wrote:
> The original intention was for it to be 64bit only, 32bit is a dying
> species and before splitting out hmm_ prefix from this code and moving
> it to be generic it was behind a 64bit flag.
>
> If latter one someone really care about 32bit we can only move to u64
I think that's the best compromise. If someone wants this on 32-bit
then they're free to get it working. That "someone" will actually be
able to test it, which you clearly won't be doing!
However, please do check that the impact of this patchset on 32-bit's
`size vmlinux' is minimal. Preferably zero.
--
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next prev parent reply other threads:[~2017-03-17 3:33 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-16 16:05 [HMM 00/16] HMM (Heterogeneous Memory Management) v18 Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:05 ` [HMM 01/16] mm/memory/hotplug: convert device bool to int to allow for more flags v3 Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:08 ` Mel Gorman
2017-03-19 20:08 ` Mel Gorman
2017-03-16 16:05 ` [HMM 02/16] mm/put_page: move ref decrement to put_zone_device_page() Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:08 ` Mel Gorman
2017-03-19 20:08 ` Mel Gorman
2017-03-16 16:05 ` [HMM 03/16] mm/ZONE_DEVICE/free-page: callback when page is freed v3 Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:08 ` Mel Gorman
2017-03-19 20:08 ` Mel Gorman
2017-03-16 16:05 ` [HMM 04/16] mm/ZONE_DEVICE/unaddressable: add support for un-addressable device memory v3 Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:09 ` Mel Gorman
2017-03-19 20:09 ` Mel Gorman
2017-03-16 16:05 ` [HMM 05/16] mm/ZONE_DEVICE/x86: add support for un-addressable device memory Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:05 ` [HMM 06/16] mm/migrate: add new boolean copy flag to migratepage() callback Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:09 ` Mel Gorman
2017-03-19 20:09 ` Mel Gorman
2017-03-16 16:05 ` [HMM 07/16] mm/migrate: new memory migration helper for use with device memory v4 Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:24 ` Reza Arbab
2017-03-16 16:24 ` Reza Arbab
2017-03-16 20:58 ` Balbir Singh
2017-03-16 20:58 ` Balbir Singh
2017-03-16 23:05 ` Andrew Morton
2017-03-16 23:05 ` Andrew Morton
2017-03-17 0:22 ` John Hubbard
2017-03-17 0:22 ` John Hubbard
2017-03-17 0:45 ` Balbir Singh
2017-03-17 0:45 ` Balbir Singh
2017-03-17 0:57 ` John Hubbard
2017-03-17 0:57 ` John Hubbard
2017-03-17 1:52 ` Jerome Glisse
2017-03-17 1:52 ` Jerome Glisse
2017-03-17 3:32 ` Andrew Morton [this message]
2017-03-17 3:32 ` Andrew Morton
2017-03-17 3:42 ` Balbir Singh
2017-03-17 3:42 ` Balbir Singh
2017-03-17 4:51 ` Balbir Singh
2017-03-17 4:51 ` Balbir Singh
2017-03-17 7:17 ` John Hubbard
2017-03-17 7:17 ` John Hubbard
2017-03-16 16:05 ` [HMM 08/16] mm/migrate: migrate_vma() unmap page from vma while collecting pages Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:05 ` [HMM 09/16] mm/hmm: heterogeneous memory management (HMM for short) Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:09 ` Mel Gorman
2017-03-19 20:09 ` Mel Gorman
2017-03-16 16:05 ` [HMM 10/16] mm/hmm/mirror: mirror process address space on device with HMM helpers Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:09 ` Mel Gorman
2017-03-19 20:09 ` Mel Gorman
2017-03-16 16:05 ` [HMM 11/16] mm/hmm/mirror: helper to snapshot CPU page table v2 Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-19 20:09 ` Mel Gorman
2017-03-19 20:09 ` Mel Gorman
2017-03-16 16:05 ` [HMM 12/16] mm/hmm/mirror: device page fault handler Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:05 ` [HMM 13/16] mm/hmm/migrate: support un-addressable ZONE_DEVICE page in migration Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:05 ` [HMM 14/16] mm/migrate: allow migrate_vma() to alloc new page on empty entry Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:05 ` [HMM 15/16] mm/hmm/devmem: device memory hotplug using ZONE_DEVICE Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-16 16:05 ` [HMM 16/16] mm/hmm/devmem: dummy HMM device for ZONE_DEVICE memory v2 Jérôme Glisse
2017-03-16 16:05 ` Jérôme Glisse
2017-03-17 6:55 ` Bob Liu
2017-03-17 6:55 ` Bob Liu
2017-03-17 16:53 ` Jerome Glisse
2017-03-17 16:53 ` Jerome Glisse
2017-03-16 20:43 ` [HMM 00/16] HMM (Heterogeneous Memory Management) v18 Andrew Morton
2017-03-16 20:43 ` Andrew Morton
2017-03-16 23:49 ` Jerome Glisse
2017-03-16 23:49 ` Jerome Glisse
2017-03-17 8:29 ` Bob Liu
2017-03-17 8:29 ` Bob Liu
2017-03-17 15:57 ` Jerome Glisse
2017-03-17 15:57 ` Jerome Glisse
2017-03-17 8:39 ` Bob Liu
2017-03-17 8:39 ` Bob Liu
2017-03-17 15:52 ` Jerome Glisse
2017-03-17 15:52 ` Jerome Glisse
2017-03-19 20:09 ` Mel Gorman
2017-03-19 20:09 ` Mel Gorman
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