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.lahti...@linux.intel.com>
> Cc: Jon Bloomfield <jon.bloomfi...@intel.com>
> Cc: Daniel Vetter <daniel.vet...@intel.com>
> Cc: Sudeep Dutt <sudeep.d...@intel.com>
> Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathap...@intel.com>
> +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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