c28573744b
This adds Kconfig selection which allows 64s hash MMU support to be disabled. It can be disabled if radix support is enabled, the minimum supported CPU type is POWER9 (or higher), and KVM is not selected. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211201144153.2456614-17-npiggin@gmail.com
27 lines
741 B
Plaintext
27 lines
741 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# IBM Coherent Accelerator (CXL) compatible devices
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#
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config CXL_BASE
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bool
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select PPC_COPRO_BASE
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select PPC_64S_HASH_MMU
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config CXL
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tristate "Support for IBM Coherent Accelerators (CXL)"
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depends on PPC_POWERNV && PCI_MSI && EEH
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select CXL_BASE
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default m
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help
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Select this option to enable driver support for IBM Coherent
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Accelerators (CXL). CXL is otherwise known as Coherent Accelerator
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Processor Interface (CAPI). CAPI allows accelerators in FPGAs to be
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coherently attached to a CPU via an MMU. This driver enables
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userspace programs to access these accelerators via /dev/cxl/afuM.N
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devices.
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CAPI adapters are found in POWER8 based systems.
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If unsure, say N.
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