linux-kernel - Re: [PATCH 0/9] Use vm_insert

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Date:   Thu, 22 Nov 2018 01:26:51 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...e.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        vbabka@...e.cz, Rik van Riel <riel@...riel.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        rppt@...ux.vnet.ibm.com, Peter Zijlstra <peterz@...radead.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        robin.murphy@....com, iamjoonsoo.kim@....com, treding@...dia.com,
        Kees Cook <keescook@...omium.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        stefanr@...6.in-berlin.de, hjc@...k-chips.com,
        Heiko Stuebner <heiko@...ech.de>, airlied@...ux.ie,
        oleksandr_andrushchenko@...m.com, joro@...tes.org,
        pawel@...iak.com, Kyungmin Park <kyungmin.park@...sung.com>,
        mchehab@...nel.org, Juergen Gross <jgross@...e.com>,
        linux-kernel@...r.kernel.org, Linux-MM <linux-mm@...ck.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux1394-devel@...ts.sourceforge.net,
        dri-devel@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org, xen-devel@...ts.xen.org,
        iommu@...ts.linux-foundation.org, linux-media@...r.kernel.org
Subject: Re: [PATCH 0/9] Use vm_insert_range

On Thu, Nov 22, 2018 at 1:08 AM Boris Ostrovsky
<boris.ostrovsky@...cle.com> wrote:
>
> On 11/21/18 1:24 AM, Souptick Joarder wrote:
> > On Thu, Nov 15, 2018 at 9:09 PM Souptick Joarder <jrdr.linux@...il.com> wrote:
> >> Previouly drivers have their own way of mapping range of
> >> kernel pages/memory into user vma and this was done by
> >> invoking vm_insert_page() within a loop.
> >>
> >> As this pattern is common across different drivers, it can
> >> be generalized by creating a new function and use it across
> >> the drivers.
> >>
> >> vm_insert_range is the new API which will be used to map a
> >> range of kernel memory/pages to user vma.
> >>
> >> All the applicable places are converted to use new vm_insert_range
> >> in this patch series.
> >>
> >> Souptick Joarder (9):
> >>   mm: Introduce new vm_insert_range API
> >>   arch/arm/mm/dma-mapping.c: Convert to use vm_insert_range
> >>   drivers/firewire/core-iso.c: Convert to use vm_insert_range
> >>   drm/rockchip/rockchip_drm_gem.c: Convert to use vm_insert_range
> >>   drm/xen/xen_drm_front_gem.c: Convert to use vm_insert_range
> >>   iommu/dma-iommu.c: Convert to use vm_insert_range
> >>   videobuf2/videobuf2-dma-sg.c: Convert to use vm_insert_range
> >>   xen/gntdev.c: Convert to use vm_insert_range
> >>   xen/privcmd-buf.c: Convert to use vm_insert_range
> > Any further comment on driver changes ?
>
> Xen drivers (the last two patches) look fine to me.

Thanks, can I considered this as Reviewed-by ?

>
> -boris
>
>
> >>  arch/arm/mm/dma-mapping.c                         | 21 ++++++-----------
> >>  drivers/firewire/core-iso.c                       | 15 ++----------
> >>  drivers/gpu/drm/rockchip/rockchip_drm_gem.c       | 20 ++--------------
> >>  drivers/gpu/drm/xen/xen_drm_front_gem.c           | 20 +++++-----------
> >>  drivers/iommu/dma-iommu.c                         | 12 ++--------
> >>  drivers/media/common/videobuf2/videobuf2-dma-sg.c | 23 ++++++-------------
> >>  drivers/xen/gntdev.c                              | 11 ++++-----
> >>  drivers/xen/privcmd-buf.c                         |  8 ++-----
> >>  include/linux/mm_types.h                          |  3 +++
> >>  mm/memory.c                                       | 28 +++++++++++++++++++++++
> >>  mm/nommu.c                                        |  7 ++++++
> >>  11 files changed, 70 insertions(+), 98 deletions(-)
> >>
> >> --
> >> 1.9.1
> >>
>