linux-kernel - [PATCH] drm: ttm: select CONFIG

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>] [day] [month] [year] [list]

Message-Id: <20250411125532.1444682-1-arnd@kernel.org>
Date: Fri, 11 Apr 2025 14:55:25 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	"Matthew Wilcox (Oracle)" <willy@...radead.org>,
	Christian Brauner <brauner@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>,
	Jocelyn Falempe <jfalempe@...hat.com>,
	Javier Martinez Canillas <javierm@...hat.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Jani Nikula <jani.nikula@...el.com>,
	Tvrtko Ursulin <tvrtko.ursulin@...lia.com>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drm: ttm: select CONFIG_SHMEM

From: Arnd Bergmann <arnd@...db.de>

ttm now directly calls into shmem code, which fails to build when
that is disabled at compile time.

ld.lld-21: error: undefined symbol: shmem_writeout
>>> referenced by ttm_backup.c
>>>               drivers/gpu/drm/ttm/ttm_backup.o:(ttm_backup_backup_page) in archive vmlinux.a

Select SHMEM here.

Fixes: fe75adffac33 ("ttm: Call shmem_writeout() from ttm_backup_backup_page()")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpu/drm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index b3bbb3f20b2a..831bd384f1fd 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -187,6 +187,7 @@ source "drivers/gpu/drm/display/Kconfig"
 config DRM_TTM
 	tristate
 	depends on DRM && MMU
+	select SHMEM
 	help
 	  GPU memory management subsystem for devices with multiple
 	  GPU memory types. Will be enabled automatically if a device driver
-- 
2.39.5