Re: [PATCH v3,04/21] v4l: add documentation for secure memory flag
From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Date: 2024-01-17 20:02:58
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dri-devel, linux-devicetree, linux-mediatek, lkml
Hi, Le mercredi 06 décembre 2023 à 16:15 +0800, Yunfei Dong a écrit :
From: Jeffrey Kardatzke <redacted> Adds documentation for V4L2_MEMORY_FLAG_SECURE.
As I noticed from DMA Heap discussions, shall this also be renamed SECURE -> RESTRICTED ? regards, Nicolas
quoted hunk ↗ jump to hunk
Signed-off-by: Jeffrey Kardatzke <redacted> Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com> --- Documentation/userspace-api/media/v4l/buffer.rst | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)diff --git a/Documentation/userspace-api/media/v4l/buffer.rst b/Documentation/userspace-api/media/v4l/buffer.rst index 52bbee81c080..a5a7d1c72d53 100644 --- a/Documentation/userspace-api/media/v4l/buffer.rst +++ b/Documentation/userspace-api/media/v4l/buffer.rst@@ -696,7 +696,7 @@ enum v4l2_memory .. _memory-flags: -Memory Consistency Flags +Memory Flags ------------------------ .. raw:: latex@@ -728,6 +728,12 @@ Memory Consistency Flags only if the buffer is used for :ref:`memory mapping <mmap>` I/O and the queue reports the :ref:`V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS <V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS>` capability. + * .. _`V4L2-MEMORY-FLAG-SECURE`: + + - ``V4L2_MEMORY_FLAG_SECURE`` + - 0x00000002 + - DMA bufs passed into the queue will be validated to ensure they were + allocated from a secure dma-heap. .. raw:: latex
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