diff options
Diffstat (limited to 'drivers/dma-buf/Kconfig')
| -rw-r--r-- | drivers/dma-buf/Kconfig | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig index 0613bb7770f5..ef73b678419c 100644 --- a/drivers/dma-buf/Kconfig +++ b/drivers/dma-buf/Kconfig @@ -6,7 +6,7 @@ config SYNC_FILE default n select DMA_SHARED_BUFFER ---help--- - The Sync File Framework adds explicit syncronization via + The Sync File Framework adds explicit synchronization via userspace. It enables send/receive 'struct dma_fence' objects to/from userspace via Sync File fds for synchronization between drivers via userspace components. It has been ported from Android. @@ -39,6 +39,16 @@ config UDMABUF A driver to let userspace turn memfd regions into dma-bufs. Qemu can use this to create host dmabufs for guest framebuffers. +config DMABUF_MOVE_NOTIFY + bool "Move notify between drivers (EXPERIMENTAL)" + default n + help + 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. + But marked experimental because we don''t jet have a consistent execution + context and memory management between drivers. + config DMABUF_SELFTESTS tristate "Selftests for the dma-buf interfaces" default n |