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f4b20bb34c
Provide a mock kernel module for the iommu_domain that allows it to run without any HW and the mocking provides a way to directly validate that the PFNs loaded into the iommu_domain are correct. This exposes the access kAPI toward userspace to allow userspace to explore the functionality of pages.c and io_pagetable.c The mock also simulates the rare case of PAGE_SIZE > iommu page size as the mock will operate at a 2K iommu page size. This allows exercising all of the calculations to support this mismatch. This is also intended to support syzkaller exploring the same space. However, it is an unusually invasive config option to enable all of this. The config option should not be enabled in a production kernel. Link: https://lore.kernel.org/r/16-v6-a196d26f289e+11787-iommufd_jgg@nvidia.com Tested-by: Matthew Rosato <mjrosato@linux.ibm.com> # s390 Tested-by: Eric Auger <eric.auger@redhat.com> # aarch64 Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
13 lines
231 B
Makefile
13 lines
231 B
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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iommufd-y := \
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device.o \
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hw_pagetable.o \
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io_pagetable.o \
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ioas.o \
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main.o \
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pages.o \
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vfio_compat.o
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iommufd-$(CONFIG_IOMMUFD_TEST) += selftest.o
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obj-$(CONFIG_IOMMUFD) += iommufd.o
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