From: Felix Kuehling <Felix.Kuehling@amd.com>
Date: Tue, 9 Jul 2019 00:09:21 +0000 (-0400)
Subject: drm/amdgpu: Add flag to wipe VRAM on release
X-Git-Tag: v5.15~5407^2~19^2~92
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d8f4981e2e8a968411105db568f3d48256b2ebbc;p=platform%2Fkernel%2Flinux-starfive.git

drm/amdgpu: Add flag to wipe VRAM on release

This memory allocation flag will be used to indicate BOs containing
sensitive data that should not be leaked to other processes.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 11cc573..c99b4f2 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -128,6 +128,10 @@ extern "C" {
  * for the second page onward should be set to NC.
  */
 #define AMDGPU_GEM_CREATE_MQD_GFX9		(1 << 8)
+/* Flag that BO may contain sensitive data that must be wiped before
+ * releasing the memory
+ */
+#define AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE	(1 << 9)
 
 struct drm_amdgpu_gem_create_in  {
 	/** the requested memory size */