Commit 4fc0a3ca authored by Zhenyu Wang's avatar Zhenyu Wang
Browse files

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: e546e281 ("drm/i915/gvt: Dmabuf support for GVT-g")
Cc: Tina Zhang <tina.zhang@intel.com>
Acked-by: default avatarTina Zhang <tina.zhang@intel.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20191212084614.1100-1-zhenyuw@linux.intel.com
parent 6d44694d

drivers/gpu/drm/i915/gvt/dmabuf.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -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,

	drm_gem_private_object_init(dev, &obj->base,

		roundup(info->size, PAGE_SIZE));

		roundup(info->size, PAGE_SIZE));

	i915_gem_object_init(obj, &intel_vgpu_gem_ops, &lock_class);

	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->read_domains = I915_GEM_DOMAIN_GTT;

	obj->write_domain = 0;

	obj->write_domain = 0;

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