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SubjectRe: [PATCH 0/8] xen: dma-buf support for grant device
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On 05/25/2018 11:33 AM, Oleksandr Andrushchenko wrote:

>
> Oleksandr Andrushchenko (8):
> xen/grant-table: Make set/clear page private code shared
> xen/balloon: Move common memory reservation routines to a module
> xen/grant-table: Allow allocating buffers suitable for DMA
> xen/gntdev: Allow mappings for DMA buffers
> xen/gntdev: Add initial support for dma-buf UAPI
> xen/gntdev: Implement dma-buf export functionality
> xen/gntdev: Implement dma-buf import functionality
> xen/gntdev: Expose gntdev's dma-buf API for in-kernel use
>
> drivers/xen/Kconfig | 23 +
> drivers/xen/Makefile | 1 +
> drivers/xen/balloon.c | 71 +--
> drivers/xen/gntdev.c | 1025 ++++++++++++++++++++++++++++++++-


I think this calls for gntdev_dma.c. I only had a quick look over gntdev
changes but they very much are concentrated in dma-specific routines.

You essentially only share file_operations entry points with original
gntdev code, right?

-boris


> drivers/xen/grant-table.c | 176 +++++-
> drivers/xen/mem-reservation.c | 134 +++++
> include/uapi/xen/gntdev.h | 106 ++++
> include/xen/grant_dev.h | 37 ++
> include/xen/grant_table.h | 28 +
> include/xen/mem_reservation.h | 29 +
> 10 files changed, 1527 insertions(+), 103 deletions(-)
> create mode 100644 drivers/xen/mem-reservation.c
> create mode 100644 include/xen/grant_dev.h
> create mode 100644 include/xen/mem_reservation.h
>

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