blob: 410b3586fba722615488f725b155bc9ccdbae525 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
From d8226875c11385248e158b88ebd123391b0c3d30 Mon Sep 17 00:00:00 2001
From: Philip Yang <Philip.Yang@amd.com>
Date: Mon, 4 Mar 2019 10:37:55 -0500
Subject: [PATCH 1624/2940] drm/amdgpu: more descriptive message if HMM not
enabled
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
If using old kernel config file, CONFIG_ZONE_DEVICE is not selected,
so CONFIG_HMM and CONFIG_HMM_MIRROR is not enabled, the current driver
error message "Failed to register MMU notifier" is not clear. Inform
user with more descriptive message on how to fix the missing kernel
config option.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109808
Change-Id: Idfebaeababa4c37c1ef093c2b91a26910a167585
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
index 4803e216e174..f5b67c63ed6b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
@@ -53,6 +53,8 @@ static inline struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
}
static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
{
+ DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
+ "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
return -ENODEV;
}
static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}
--
2.17.1
|
