linux-kernel - [PATCH] accel: Add .mmap to DRM_ACCEL

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-next>] [day] [month] [year] [list]

Message-ID: <1673977558-7648-1-git-send-email-quic_jhugo@quicinc.com>
Date:   Tue, 17 Jan 2023 10:45:58 -0700
From:   Jeffrey Hugo <quic_jhugo@...cinc.com>
To:     <jacek.lawrynowicz@...ux.intel.com>, <ogabbay@...nel.org>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        "Jeffrey Hugo" <quic_jhugo@...cinc.com>
Subject: [PATCH] accel: Add .mmap to DRM_ACCEL_FOPS

In reviewing the ivpu driver, DEFINE_DRM_ACCEL_FOPS could have been used
if DRM_ACCEL_FOPS defined .mmap to be drm_gem_mmap.  Lets add that since
accel drivers are a variant of drm drivers, modern drm drivers are
expected to use GEM, and mmap() is a common operation that is expected
to be heavily used in accel drivers thus the common accel driver should
be able to just use DEFINE_DRM_ACCEL_FOPS() for convenience.

Signed-off-by: Jeffrey Hugo <quic_jhugo@...cinc.com>
---
 include/drm/drm_accel.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/drm/drm_accel.h b/include/drm/drm_accel.h
index 65c0affb..d495506 100644
--- a/include/drm/drm_accel.h
+++ b/include/drm/drm_accel.h
@@ -27,7 +27,8 @@
 	.compat_ioctl	= drm_compat_ioctl,\
 	.poll		= drm_poll,\
 	.read		= drm_read,\
-	.llseek		= noop_llseek
+	.llseek		= noop_llseek, \
+	.mmap		= drm_gem_mmap
 
 /**
  * DEFINE_DRM_ACCEL_FOPS() - macro to generate file operations for accelerators drivers
-- 
2.7.4