From: David Hildenbrand <david@redhat.com>
To: Alex Sierra <alex.sierra@amd.com>, jgg@nvidia.com
Cc: rcampbell@nvidia.com, willy@infradead.org,
Felix.Kuehling@amd.com, apopple@nvidia.com,
amd-gfx@lists.freedesktop.org, linux-xfs@vger.kernel.org,
linux-mm@kvack.org, jglisse@redhat.com,
dri-devel@lists.freedesktop.org, akpm@linux-foundation.org,
linux-ext4@vger.kernel.org, hch@lst.de
Subject: Re: [PATCH v9 04/14] mm: handling Non-LRU pages returned by vm_normal_pages
Date: Mon, 18 Jul 2022 12:51:23 +0200 [thread overview]
Message-ID: <95b3c8f3-2e4d-fa2f-1552-580236eea485@redhat.com> (raw)
In-Reply-To: <20220715150521.18165-5-alex.sierra@amd.com>
On 15.07.22 17:05, Alex Sierra wrote:
> With DEVICE_COHERENT, we'll soon have vm_normal_pages() return
> device-managed anonymous pages that are not LRU pages. Although they
> behave like normal pages for purposes of mapping in CPU page, and for
> COW. They do not support LRU lists, NUMA migration or THP.
>
> Callers to follow_page() currently don't expect ZONE_DEVICE pages,
> however, with DEVICE_COHERENT we might now return ZONE_DEVICE. Check
> for ZONE_DEVICE pages in applicable users of follow_page() as well.
>
> Signed-off-by: Alex Sierra <alex.sierra@amd.com>
> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> (v2)
> Reviewed-by: Alistair Popple <apopple@nvidia.com> (v6)
>
Acked-by: David Hildenbrand <david@redhat.com>
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2022-07-18 10:51 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-15 15:05 [PATCH v9 00/14] Add MEMORY_DEVICE_COHERENT for coherent device memory mapping Alex Sierra
2022-07-15 15:05 ` [PATCH v9 01/14] mm: rename is_pinnable_pages to is_longterm_pinnable_pages Alex Sierra
2022-07-15 15:05 ` [PATCH v9 02/14] mm: move page zone helpers from mm.h to mmzone.h Alex Sierra
2022-07-18 10:50 ` David Hildenbrand
2022-07-18 17:52 ` Felix Kuehling
2022-07-18 18:46 ` David Hildenbrand
2023-06-15 19:33 ` Peter Xu
2023-06-15 20:15 ` Matthew Wilcox
2023-06-15 20:48 ` Peter Xu
2022-07-15 15:05 ` [PATCH v9 03/14] mm: add zone device coherent type memory support Alex Sierra
2022-07-15 15:05 ` [PATCH v9 04/14] mm: handling Non-LRU pages returned by vm_normal_pages Alex Sierra
2022-07-18 10:51 ` David Hildenbrand [this message]
2022-07-15 15:05 ` [PATCH v9 05/14] mm: add device coherent vma selection for memory migration Alex Sierra
2022-07-15 15:05 ` [PATCH v9 06/14] mm/gup: migrate device coherent pages when pinning instead of failing Alex Sierra
2022-07-18 10:56 ` David Hildenbrand
2022-07-18 20:32 ` Andrew Morton
2022-07-19 8:40 ` David Hildenbrand
2022-07-26 2:22 ` Sierra Guiza, Alejandro (Alex)
2022-07-26 19:05 ` Andrew Morton
2022-07-15 15:05 ` [PATCH v9 07/14] drm/amdkfd: add SPM support for SVM Alex Sierra
2022-07-15 15:05 ` [PATCH v9 08/14] lib: test_hmm add ioctl to get zone device type Alex Sierra
2022-07-15 15:05 ` [PATCH v9 09/14] lib: test_hmm add module param for " Alex Sierra
2022-07-15 15:05 ` [PATCH v9 10/14] lib: add support for device coherent type in test_hmm Alex Sierra
2022-07-15 15:05 ` [PATCH v9 11/14] tools: update hmm-test to support device coherent type Alex Sierra
2022-07-15 15:05 ` [PATCH v9 12/14] tools: update test_hmm script to support SP config Alex Sierra
2022-07-15 15:05 ` [PATCH v9 13/14] tools: add hmm gup tests for device coherent type Alex Sierra
2022-07-15 15:05 ` [PATCH v9 14/14] tools: add selftests to hmm for COW in device memory Alex Sierra
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