linux-kernel - [PATCH v3,04/21] v4l: add documentation for secure memory flag

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231206081538.17056-5-yunfei.dong@mediatek.com>
Date:   Wed, 6 Dec 2023 16:15:21 +0800
From:   Yunfei Dong <yunfei.dong@...iatek.com>
To:     Jeffrey Kardatzke <jkardatzke@...gle.com>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        Nathan Hebert <nhebert@...omium.org>
CC:     Chen-Yu Tsai <wenst@...omium.org>, Yong Wu <yong.wu@...iatek.com>,
        "Hsin-Yi Wang" <hsinyi@...omium.org>,
        Fritz Koenig <frkoenig@...omium.org>,
        "Daniel Vetter" <daniel@...ll.ch>,
        Steve Cho <stevecho@...omium.org>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        "Brian Starkey" <Brian.Starkey@....com>,
        John Stultz <jstultz@...gle.com>,
        "T . J . Mercier" <tjmercier@...gle.com>,
        Christian König <christian.koenig@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <dri-devel@...ts.freedesktop.org>,
        <linaro-mm-sig@...ts.linaro.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v3,04/21] v4l: add documentation for secure memory flag

From: Jeffrey Kardatzke <jkardatzke@...gle.com>

Adds documentation for V4L2_MEMORY_FLAG_SECURE.

Signed-off-by: Jeffrey Kardatzke <jkardatzke@...gle.com>
Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.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
 
-- 
2.18.0