linux-kernel - Re: [PATCH 10/10] mm: remove CONFIG_MIGRATE_VMA

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Message-ID: <20190816152138.GI5412@mellanox.com>
Date:   Fri, 16 Aug 2019 15:21:44 +0000
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Christoph Hellwig <hch@....de>
CC:     Jérôme Glisse <jglisse@...hat.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        Bharata B Rao <bharata@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 10/10] mm: remove CONFIG_MIGRATE_VMA_HELPER

On Wed, Aug 14, 2019 at 09:59:28AM +0200, Christoph Hellwig wrote:
> CONFIG_MIGRATE_VMA_HELPER guards helpers that are required for proper
> devic private memory support.  Remove the option and just check for
> CONFIG_DEVICE_PRIVATE instead.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/gpu/drm/nouveau/Kconfig | 1 -
>  mm/Kconfig                      | 3 ---
>  mm/migrate.c                    | 4 ++--
>  3 files changed, 2 insertions(+), 6 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...lanox.com>

Aside from it making sense, I checked no other driver enables
DEVICE_PRIVATE, so no change in kernel build.

Jason