On Fri, Nov 22, 2019 at 08:14:51PM +0000, Jason Gunthorpe wrote:
On Fri, Nov 22, 2019 at 12:01:17PM -0800, Niranjan Vishwanathapura wrote:On Fri, Nov 22, 2019 at 11:54:45AM -0800, Niranjana Vishwanathapura wrote: > Use HMM page table mirroring support to build device page table. > Implement the bind ioctl and bind the process address range in the > specified context's ppgtt. > Handle invalidation notifications by unbinding the address range. > > Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> > Cc: Jon Bloomfield <jon.bloomfield@xxxxxxxxx> > Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx> > Cc: Sudeep Dutt <sudeep.dutt@xxxxxxxxx> > Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx> > +int i915_svm_bind_mm(struct i915_address_space *vm) > +{ > + struct i915_svm *svm; > + struct mm_struct *mm; > + int ret = 0; > + > + mm = get_task_mm(current); > + down_write(&mm->mmap_sem); > + mutex_lock(&vm->svm_mutex); > + if (vm->svm) > + goto bind_out; > + > + svm = kzalloc(sizeof(*svm), GFP_KERNEL); > + if (!svm) { > + ret = -ENOMEM; > + goto bind_out; > + } > + svm->mirror.ops = &i915_mirror_ops; > + mutex_init(&svm->mutex); > + kref_init(&svm->ref); > + svm->mm = mm; > + svm->vm = vm; > + > + ret = hmm_mirror_register(&svm->mirror, mm); I saw that these APIs have been removed. I will update once it gets included in kernel release.I would like to see all the mmu notifier use in i916 updated to use the new APIs :) Please cc me when you post patches using the new APIs, I'd like to see how they are being used.
Ok, sure, will do. Thanks, Niranjana
Regards, Jason
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