On Fri, Aug 22, 2025 at 06:39:03PM +0800, Chenghai Huang wrote: > From: Yang Shen <shenyang39@xxxxxxxxxx> > > The current uacce_vm_ops does not support the mremap operation of > vm_operations_struct. Implement .mremap to return -EPERM to remind > users Why is this needed? If mremap is not set, what is the value returned? And why is -EPERM the correct value to return here? That's not what the man pages say is valid :( thanks, greg k-h