Move notify between drivers (EXPERIMENTAL)
configname: CONFIG_DMABUF_MOVE_NOTIFY
Linux Kernel Configuration
└─>Device Drivers
└─>DMABUF options
└─>Move notify between drivers (EXPERIMENTAL)
In linux kernel since version 5.1 (release Date: 2019-05-05)
Don't pin buffers if the dynamic DMA-buf interface is available on
both the exporter as well as the importer. This fixes a security
problem where userspace is able to pin unrestricted amounts of memory
through DMA-buf.
This is marked experimental because we don't yet have a consistent
execution context and memory management between drivers.
both the exporter as well as the importer. This fixes a security
problem where userspace is able to pin unrestricted amounts of memory
through DMA-buf.
This is marked experimental because we don't yet have a consistent
execution context and memory management between drivers.