From: Alistair Popple <apopple@nvidia.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Alex Sierra <alex.sierra@amd.com>,
rcampbell@nvidia.com, willy@infradead.org,
Felix.Kuehling@amd.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 v2 03/11] mm/gup: migrate PIN_LONGTERM dev coherent pages to system
Date: Thu, 9 Dec 2021 12:45:24 +1100 [thread overview]
Message-ID: <117075453.Ddeq1f3ylz@nvdebian> (raw)
In-Reply-To: <20211208135345.GC6467@ziepe.ca>
On Thursday, 9 December 2021 12:53:45 AM AEDT Jason Gunthorpe wrote:
> > I think a similar problem exists for device private fault handling as well and
> > it has been on my list of things to fix for a while. I think the solution is to
> > call try_get_page(), except it doesn't work with device pages due to the whole
> > refcount thing. That issue is blocking a fair bit of work now so I've started
> > looking into it.
>
> Where is this?
Nothing posted yet. I've been going through the mailing list and the old
thread[1] to get an understanding of what is left to do. If you have any
suggestions they would be welcome.
[1] https://lore.kernel.org/all/20211014153928.16805-3-alex.sierra@amd.com/
WARNING: multiple messages have this Message-ID (diff)
From: Alistair Popple <apopple@nvidia.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: <akpm@linux-foundation.org>, <Felix.Kuehling@amd.com>,
<linux-mm@kvack.org>, <rcampbell@nvidia.com>,
<linux-ext4@vger.kernel.org>, <linux-xfs@vger.kernel.org>,
Alex Sierra <alex.sierra@amd.com>,
<amd-gfx@lists.freedesktop.org>,
<dri-devel@lists.freedesktop.org>, <hch@lst.de>,
<jglisse@redhat.com>, <willy@infradead.org>
Subject: Re: [PATCH v2 03/11] mm/gup: migrate PIN_LONGTERM dev coherent pages to system
Date: Thu, 9 Dec 2021 12:45:24 +1100 [thread overview]
Message-ID: <117075453.Ddeq1f3ylz@nvdebian> (raw)
In-Reply-To: <20211208135345.GC6467@ziepe.ca>
On Thursday, 9 December 2021 12:53:45 AM AEDT Jason Gunthorpe wrote:
> > I think a similar problem exists for device private fault handling as well and
> > it has been on my list of things to fix for a while. I think the solution is to
> > call try_get_page(), except it doesn't work with device pages due to the whole
> > refcount thing. That issue is blocking a fair bit of work now so I've started
> > looking into it.
>
> Where is this?
Nothing posted yet. I've been going through the mailing list and the old
thread[1] to get an understanding of what is left to do. If you have any
suggestions they would be welcome.
[1] https://lore.kernel.org/all/20211014153928.16805-3-alex.sierra@amd.com/
next prev parent reply other threads:[~2021-12-09 17:04 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-06 18:52 [PATCH v2 00/11] Add MEMORY_DEVICE_COHERENT for coherent device memory mapping Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 01/11] mm: add zone device coherent type memory support Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 02/11] mm: add device coherent vma selection for memory migration Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 03/11] mm/gup: migrate PIN_LONGTERM dev coherent pages to system Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-08 11:31 ` Alistair Popple
2021-12-08 11:31 ` Alistair Popple
2021-12-08 13:53 ` Jason Gunthorpe
2021-12-08 13:53 ` Jason Gunthorpe
2021-12-09 1:45 ` Alistair Popple [this message]
2021-12-09 1:45 ` Alistair Popple
2021-12-09 2:53 ` Jason Gunthorpe
2021-12-09 2:53 ` Jason Gunthorpe
2021-12-08 16:58 ` Felix Kuehling
2021-12-08 16:58 ` Felix Kuehling
2021-12-08 17:30 ` Felix Kuehling
2021-12-08 17:30 ` Felix Kuehling
2021-12-08 18:55 ` Sierra Guiza, Alejandro (Alex)
2021-12-08 18:55 ` Sierra Guiza, Alejandro (Alex)
2021-12-09 10:53 ` Alistair Popple
2021-12-09 10:53 ` Alistair Popple
2021-12-09 16:29 ` Felix Kuehling
2021-12-09 16:29 ` Felix Kuehling
2021-12-09 16:54 ` Sierra Guiza, Alejandro (Alex)
2021-12-09 16:54 ` Sierra Guiza, Alejandro (Alex)
2021-12-10 1:31 ` Alistair Popple
2021-12-10 1:31 ` Alistair Popple
2021-12-10 16:39 ` Felix Kuehling
2021-12-10 16:39 ` Felix Kuehling
2021-12-06 18:52 ` [PATCH v2 04/11] drm/amdkfd: add SPM support for SVM Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 05/11] drm/amdkfd: coherent type as sys mem on migration to ram Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 06/11] lib: test_hmm add ioctl to get zone device type Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 07/11] lib: test_hmm add module param for " Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 08/11] lib: add support for device coherent type in test_hmm Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2022-01-03 20:24 ` Liam Howlett
2022-01-03 20:24 ` Liam Howlett
2021-12-06 18:52 ` [PATCH v2 09/11] tools: update hmm-test to support device coherent type Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 10/11] tools: update test_hmm script to support SP config Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-06 18:52 ` [PATCH v2 11/11] tools: add hmm gup test for long term pinned device pages Alex Sierra
2021-12-06 18:52 ` Alex Sierra
2021-12-07 19:31 ` Jason Gunthorpe
2021-12-07 19:31 ` Jason Gunthorpe
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