version 4: - add a configuration flag to switch between legacy Ion misc device and one device per heap version. This change has been suggested after Laura talks at XDC 2017. version 3: - change ion_device_add_heap prototype to return a possible error. version 2: - simplify ioctl check like propose by Dan - make sure that we don't register more than ION_DEV_MAX heaps. Until now all ion heaps are addressing using the same device "/dev/ion". This way of working doesn't allow to give access rights (for example with SElinux rules) per heap. This series propose to have (under configuartion flag) one device "/dev/ionX" per heap. Query heaps informations will be possible on each device node but allocation request will only be possible if heap_mask_id match with device minor number. That enable thsi new flag change Ion ABI because: - device name change - allocation must be done on the correct device/heap. - device major number will not be the same and that could impact init scripts. Benjamin Gaignard (2): staging: ion: simplify ioctl args checking function staging: ion: create one device entry per heap drivers/staging/android/TODO | 1 - drivers/staging/android/ion/Kconfig | 8 ++++++++ drivers/staging/android/ion/ion-ioctl.c | 27 +++++++++++++++++++-------- drivers/staging/android/ion/ion.c | 29 +++++++++++++++++++++++++++-- drivers/staging/android/ion/ion.h | 18 +++++++++++++++++- 5 files changed, 71 insertions(+), 12 deletions(-) -- 2.7.4 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
