accel/amdxdna: Disable device buffer exporting

[PATCH V1] accel/amdxdna: Disable device buffer exporting

Posted by Lizhi Hou 1 week, 6 days ago

Device buffers are never intended to be exported. Disable exporting
support explicitly.

Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
---
 drivers/accel/amdxdna/amdxdna_gem.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/accel/amdxdna/amdxdna_gem.c b/drivers/accel/amdxdna/amdxdna_gem.c
index 2dfdc56ba91d..2727e48afc0a 100644
--- a/drivers/accel/amdxdna/amdxdna_gem.c
+++ b/drivers/accel/amdxdna/amdxdna_gem.c
@@ -725,9 +725,15 @@ static int amdxdna_gem_dev_obj_vmap(struct drm_gem_object *obj, struct iosys_map
 	return 0;
 }
 
+static struct dma_buf *amdxdna_gem_dev_obj_export(struct drm_gem_object *gobj, int flags)
+{
+	return ERR_PTR(-EOPNOTSUPP);
+}
+
 static const struct drm_gem_object_funcs amdxdna_gem_dev_obj_funcs = {
 	.free = amdxdna_gem_dev_obj_free,
 	.vmap = amdxdna_gem_dev_obj_vmap,
+	.export = amdxdna_gem_dev_obj_export,
 };
 
 static const struct drm_gem_object_funcs amdxdna_gem_shmem_funcs = {
-- 
2.34.1

Re: [PATCH V1] accel/amdxdna: Disable device buffer exporting

Posted by Mario Limonciello 1 week, 3 days ago


On 5/26/26 19:50, Lizhi Hou wrote:
> Device buffers are never intended to be exported. Disable exporting
> support explicitly.
> 
> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
> ---
>   drivers/accel/amdxdna/amdxdna_gem.c | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/accel/amdxdna/amdxdna_gem.c b/drivers/accel/amdxdna/amdxdna_gem.c
> index 2dfdc56ba91d..2727e48afc0a 100644
> --- a/drivers/accel/amdxdna/amdxdna_gem.c
> +++ b/drivers/accel/amdxdna/amdxdna_gem.c
> @@ -725,9 +725,15 @@ static int amdxdna_gem_dev_obj_vmap(struct drm_gem_object *obj, struct iosys_map
>   	return 0;
>   }
>   
> +static struct dma_buf *amdxdna_gem_dev_obj_export(struct drm_gem_object *gobj, int flags)
> +{
> +	return ERR_PTR(-EOPNOTSUPP);
> +}
> +
>   static const struct drm_gem_object_funcs amdxdna_gem_dev_obj_funcs = {
>   	.free = amdxdna_gem_dev_obj_free,
>   	.vmap = amdxdna_gem_dev_obj_vmap,
> +	.export = amdxdna_gem_dev_obj_export,
>   };
>   
>   static const struct drm_gem_object_funcs amdxdna_gem_shmem_funcs = {

Re: [PATCH V1] accel/amdxdna: Disable device buffer exporting

Posted by Lizhi Hou 1 week, 3 days ago

Applied to drm-misc-next

On 5/28/26 14:19, Mario Limonciello wrote:
>
>
> On 5/26/26 19:50, Lizhi Hou wrote:
>> Device buffers are never intended to be exported. Disable exporting
>> support explicitly.
>>
>> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
>> ---
>>   drivers/accel/amdxdna/amdxdna_gem.c | 6 ++++++
>>   1 file changed, 6 insertions(+)
>>
>> diff --git a/drivers/accel/amdxdna/amdxdna_gem.c 
>> b/drivers/accel/amdxdna/amdxdna_gem.c
>> index 2dfdc56ba91d..2727e48afc0a 100644
>> --- a/drivers/accel/amdxdna/amdxdna_gem.c
>> +++ b/drivers/accel/amdxdna/amdxdna_gem.c
>> @@ -725,9 +725,15 @@ static int amdxdna_gem_dev_obj_vmap(struct 
>> drm_gem_object *obj, struct iosys_map
>>       return 0;
>>   }
>>   +static struct dma_buf *amdxdna_gem_dev_obj_export(struct 
>> drm_gem_object *gobj, int flags)
>> +{
>> +    return ERR_PTR(-EOPNOTSUPP);
>> +}
>> +
>>   static const struct drm_gem_object_funcs amdxdna_gem_dev_obj_funcs = {
>>       .free = amdxdna_gem_dev_obj_free,
>>       .vmap = amdxdna_gem_dev_obj_vmap,
>> +    .export = amdxdna_gem_dev_obj_export,
>>   };
>>     static const struct drm_gem_object_funcs amdxdna_gem_shmem_funcs = {
>