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.
Regards,
Jason
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