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authorZhenyu Wang <zhenyuw@linux.intel.com>2019-12-12 16:46:14 +0800
committerZhenyu Wang <zhenyuw@linux.intel.com>2019-12-13 11:15:25 +0800
commit4fc0a3ca721da2bfbab0fdf248bd76d7e6bc232f (patch)
treecb456f25d1d2e2d890b9e31d3df167a1fc4065a7 /drivers/gpu
parent6d44694dc7c72e82e0f45d114a9c9e3f3e2aeab7 (diff)
downloadlinux-4fc0a3ca721da2bfbab0fdf248bd76d7e6bc232f.tar.bz2
drm/i915/gvt: set guest display buffer as readonly
We shouldn't allow write for exposed guest display buffer which doesn't make sense. So explicitly set read only flag for display dmabuf allocated object. Fixes: e546e281d33d ("drm/i915/gvt: Dmabuf support for GVT-g") Cc: Tina Zhang <tina.zhang@intel.com> Acked-by: Tina Zhang <tina.zhang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20191212084614.1100-1-zhenyuw@linux.intel.com
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/gvt/dmabuf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/dmabuf.c b/drivers/gpu/drm/i915/gvt/dmabuf.c
index e451298d11c3..ee0f3094e6d0 100644
--- a/drivers/gpu/drm/i915/gvt/dmabuf.c
+++ b/drivers/gpu/drm/i915/gvt/dmabuf.c
@@ -163,6 +163,7 @@ static struct drm_i915_gem_object *vgpu_create_gem(struct drm_device *dev,
drm_gem_private_object_init(dev, &obj->base,
roundup(info->size, PAGE_SIZE));
i915_gem_object_init(obj, &intel_vgpu_gem_ops, &lock_class);
+ i915_gem_object_set_readonly(obj);
obj->read_domains = I915_GEM_DOMAIN_GTT;
obj->write_domain = 0;