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d4cb19250a
All we need are a pages array, pin_user_pages_fast can give us that directly. Plus this avoids the entire raw pfn side of get_vaddr_frames. Note that pin_user_pages_fast is a safe replacement despite the seeming lack of checking for vma->vm_flasg & (VM_IO | VM_PFNMAP). Such ptes are marked with pte_mkspecial (which pup_fast rejects in the fastpath), and only architectures supporting that support the pin_user_pages_fast fastpath. Reviewed-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jérôme Glisse <jglisse@redhat.com> Cc: Jan Kara <jack@suse.cz> Cc: Dan Williams <dan.j.williams@intel.com> Cc: linux-mm@kvack.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: Oded Gabbay <oded.gabbay@gmail.com> Cc: Omer Shpigelman <oshpigelman@habana.ai> Cc: Ofir Bitton <obitton@habana.ai> Cc: Tomer Tayar <ttayar@habana.ai> Cc: Moti Haimovski <mhaimovski@habana.ai> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Pawel Piskorski <ppiskorski@habana.ai> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20201127164131.2244124-4-daniel.vetter@ffwll.ch
25 lines
682 B
Plaintext
25 lines
682 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# HabanaLabs AI accelerators driver
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#
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config HABANA_AI
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tristate "HabanaAI accelerators (habanalabs)"
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depends on PCI && HAS_IOMEM
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select GENERIC_ALLOCATOR
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select HWMON
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help
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Enables PCIe card driver for Habana's AI Processors (AIP) that are
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designed to accelerate Deep Learning inference and training workloads.
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The driver manages the PCIe devices and provides IOCTL interface for
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the user to submit workloads to the devices.
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The user-space interface is described in
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include/uapi/misc/habanalabs.h
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If unsure, say N.
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To compile this driver as a module, choose M here: the
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module will be called habanalabs.
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