From: Christoph Hellwig <hch@infradead.org>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>,
Daniel Vetter <daniel@ffwll.ch>,
Alistair Popple <apopple@nvidia.com>,
Linux MM <linux-mm@kvack.org>,
Nouveau Dev <nouveau@lists.freedesktop.org>,
Ben Skeggs <bskeggs@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Doc Mailing List <linux-doc@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
kvm-ppc@vger.kernel.org,
dri-devel <dri-devel@lists.freedesktop.org>,
Ralph Campbell <rcampbell@nvidia.com>,
Jerome Glisse <jglisse@redhat.com>
Subject: Re: [PATCH 0/9] Add support for SVM atomics in Nouveau
Date: Thu, 11 Feb 2021 07:55:10 +0000 [thread overview]
Message-ID: <20210211075510.GA2368090@infradead.org> (raw)
In-Reply-To: <20210210175913.GO4718@ziepe.ca>
On Wed, Feb 10, 2021 at 01:59:13PM -0400, Jason Gunthorpe wrote:
> Really what you want to do here is leave the CPU page in the VMA and
> the page tables where it started and deny CPU access to the page. Then
> all the proper machinery will continue to work.
>
> IMHO "migration" is the wrong idea if the data isn't actually moving.
Agreed.
next prev parent reply other threads:[~2021-02-11 7:55 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-09 1:07 [PATCH 0/9] Add support for SVM atomics in Nouveau Alistair Popple
2021-02-09 1:07 ` [PATCH 1/9] mm/migrate.c: Always allow device private pages to migrate Alistair Popple
2021-02-09 13:39 ` Jason Gunthorpe
2021-02-10 3:40 ` Alistair Popple
2021-02-10 12:56 ` Jason Gunthorpe
2021-02-09 1:07 ` [PATCH 2/9] mm/migrate.c: Allow pfn flags to be passed to migrate_vma_setup() Alistair Popple
2021-02-09 1:07 ` [PATCH 3/9] mm/migrate: Add a unmap and pin migration mode Alistair Popple
2021-02-09 1:07 ` [PATCH 4/9] Documentation: Add unmap and pin to HMM Alistair Popple
2021-02-09 1:07 ` [PATCH 5/9] hmm-tests: Add test for unmap and pin Alistair Popple
2021-02-09 1:07 ` [PATCH 6/9] nouveau/dmem: Only map migrating pages Alistair Popple
2021-02-09 1:07 ` [PATCH 7/9] nouveau/svm: Refactor nouveau_range_fault Alistair Popple
2021-02-09 1:07 ` [PATCH 8/9] nouveau/dmem: Add support for multiple page types Alistair Popple
2021-02-09 1:07 ` [PATCH 9/9] nouveau/svm: Implement atomic SVM access Alistair Popple
2021-02-09 10:27 ` [PATCH 0/9] Add support for SVM atomics in Nouveau Daniel Vetter
2021-02-09 12:57 ` Alistair Popple
2021-02-09 13:35 ` Jason Gunthorpe
2021-02-09 13:39 ` Daniel Vetter
2021-02-09 13:44 ` Jason Gunthorpe
2021-02-09 21:17 ` Jerome Glisse
2021-02-10 17:56 ` Jason Gunthorpe
2021-02-09 13:37 ` Daniel Vetter
2021-02-09 20:53 ` John Hubbard
2021-02-10 12:59 ` Daniel Vetter
2021-02-11 2:26 ` John Hubbard
2021-02-10 17:59 ` Jason Gunthorpe
2021-02-11 7:55 ` Christoph Hellwig [this message]
2021-02-17 23:00 ` Alistair Popple
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