linux-kernel - Re: [PATCH v3 hmm 00/11] Add mmu_notifier_get/put for managing mmu notifier registrations

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Message-ID: <20190816151452.GA8562@ziepe.ca>
Date:   Fri, 16 Aug 2019 12:14:52 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     linux-mm@...ck.org
Cc:     Andrea Arcangeli <aarcange@...hat.com>,
        Christoph Hellwig <hch@....de>,
        John Hubbard <jhubbard@...dia.com>,
        Jérôme Glisse <jglisse@...hat.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        "Kuehling, Felix" <Felix.Kuehling@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "David (ChunMing) Zhou" <David1.Zhou@....com>,
        Dimitri Sivanich <sivanich@....com>,
        dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        iommu@...ts.linux-foundation.org, intel-gfx@...ts.freedesktop.org,
        Gavin Shan <shangw@...ux.vnet.ibm.com>,
        Andrea Righi <andrea@...terlinux.com>
Subject: Re: [PATCH v3 hmm 00/11] Add mmu_notifier_get/put for managing mmu
 notifier registrations

On Tue, Aug 06, 2019 at 08:15:37PM -0300, Jason Gunthorpe wrote:
> This series is already entangled with patches in the hmm & RDMA tree and
> will require some git topic branches for the RDMA ODP stuff. I intend for
> it to go through the hmm tree.

> Jason Gunthorpe (11):
>   mm/mmu_notifiers: hoist do_mmu_notifier_register down_write to the
>     caller
>   mm/mmu_notifiers: do not speculatively allocate a mmu_notifier_mm
>   mm/mmu_notifiers: add a get/put scheme for the registration
>   misc/sgi-gru: use mmu_notifier_get/put for struct gru_mm_struct
>   hmm: use mmu_notifier_get/put for 'struct hmm'
>   drm/radeon: use mmu_notifier_get/put for struct radeon_mn
>   drm/amdkfd: fix a use after free race with mmu_notifer unregister
>   drm/amdkfd: use mmu_notifier_put

Other than these patches:

>   RDMA/odp: use mmu_notifier_get/put for 'struct ib_ucontext_per_mm'
>   RDMA/odp: remove ib_ucontext from ib_umem
>   mm/mmu_notifiers: remove unregister_no_release

This series has been applied.

I will apply the ODP patches when the series they depend on is merged
to the RDMA tree

Any further acks/remarks I will annotate, thanks in advance

Thanks to all reviewers,
Jason