Am 18.03.25 um 20:22 schrieb Daniel Almeida:

From: Asahi Lina lina@asahilina.net

There doesn't seem to be a way for the Rust bindings to get a compile-time constant reference to drm_gem_shmem_vm_ops, so we need to duplicate that structure in Rust... this isn't nice...

Well "isn't nice" is an understatement. We can have that as a short term hack, but I don't think that this is a doable long term solution.

For this particular case here it most likely doesn't matter, but operation pointer structures are often used to identify a certain class of object.

So exporting the functions and then re-creating the constant operation pointer structure in Rust doesn't work in some cases.

Regards, Christian.

Signed-off-by: Asahi Lina lina@asahilina.net Signed-off-by: Daniel Almeida daniel.almeida@collabora.com

---

drivers/gpu/drm/drm_gem_shmem_helper.c | 9 ++++++--- include/drm/drm_gem_shmem_helper.h | 3 +++ 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index ec89e9499f5f02a2a35713669bf649dd2abb9938..be310db5863871604f3502ad1f419937d4c20a84 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -535,7 +535,7 @@ int drm_gem_shmem_dumb_create(struct drm_file *file, struct drm_device *dev, } EXPORT_SYMBOL_GPL(drm_gem_shmem_dumb_create); -static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf) +vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; struct drm_gem_object *obj = vma->vm_private_data; @@ -564,8 +564,9 @@ static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf) return ret; } +EXPORT_SYMBOL_GPL(drm_gem_shmem_fault); -static void drm_gem_shmem_vm_open(struct vm_area_struct *vma) +void drm_gem_shmem_vm_open(struct vm_area_struct *vma) { struct drm_gem_object *obj = vma->vm_private_data; struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj); @@ -586,8 +587,9 @@ static void drm_gem_shmem_vm_open(struct vm_area_struct *vma) drm_gem_vm_open(vma); } +EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_open); -static void drm_gem_shmem_vm_close(struct vm_area_struct *vma) +void drm_gem_shmem_vm_close(struct vm_area_struct *vma) { struct drm_gem_object *obj = vma->vm_private_data; struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj); @@ -598,6 +600,7 @@ static void drm_gem_shmem_vm_close(struct vm_area_struct *vma) drm_gem_vm_close(vma); } +EXPORT_SYMBOL_GPL(drm_gem_shmem_vm_close); const struct vm_operations_struct drm_gem_shmem_vm_ops = { .fault = drm_gem_shmem_fault, diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h index d22e3fb53631ab655748d7f6c628ffdb402f6324..b70d3cc35bd194e7cd718bee220408b5dda568bf 100644 --- a/include/drm/drm_gem_shmem_helper.h +++ b/include/drm/drm_gem_shmem_helper.h @@ -132,6 +132,9 @@ void drm_gem_shmem_print_info(const struct drm_gem_shmem_object *shmem, struct drm_printer *p, unsigned int indent); extern const struct vm_operations_struct drm_gem_shmem_vm_ops; +vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf); +void drm_gem_shmem_vm_open(struct vm_area_struct *vma); +void drm_gem_shmem_vm_close(struct vm_area_struct *vma); /*

• GEM object functions