On Wed, Feb 11, 2026 at 09:03:38AM +0100, Boris Brezillon wrote: > drm_gpuvm_bo_extobj_add() is a NOP if the object is private, but it > forces us to take/release the VM resv lock, so let's do that only when > we know the object can be shared. > > v3: > - New commit > > Signed-off-by: Boris Brezillon <[email protected]>
Reviewed-by: Liviu Dudau <[email protected]> Best regards, Liviu > --- > drivers/gpu/drm/panthor/panthor_mmu.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/panthor/panthor_mmu.c > b/drivers/gpu/drm/panthor/panthor_mmu.c > index ba3b7c93303c..99c794c429ca 100644 > --- a/drivers/gpu/drm/panthor/panthor_mmu.c > +++ b/drivers/gpu/drm/panthor/panthor_mmu.c > @@ -1284,9 +1284,11 @@ static int panthor_vm_prepare_map_op_ctx(struct > panthor_vm_op_ctx *op_ctx, > } > > /* Insert BO into the extobj list last, when we know nothing can fail. > */ > - dma_resv_lock(panthor_vm_resv(vm), NULL); > - drm_gpuvm_bo_extobj_add(op_ctx->map.vm_bo); > - dma_resv_unlock(panthor_vm_resv(vm)); > + if (bo->base.base.resv != panthor_vm_resv(vm)) { > + dma_resv_lock(panthor_vm_resv(vm), NULL); > + drm_gpuvm_bo_extobj_add(op_ctx->map.vm_bo); > + dma_resv_unlock(panthor_vm_resv(vm)); > + } > > return 0; > > -- > 2.52.0 > -- ==================== | I would like to | | fix the world, | | but they're not | | giving me the | \ source code! / --------------- ¯\_(ツ)_/¯
