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7adfd68274
The selftest now depends on the AMDv1 page table, however the selftest
kconfig itself is just an sub-option of the main IOMMUFD module kconfig.
This means it cannot be modular and so kconfig allowed a modular
IOMMU_PT_AMDV1 with a built in IOMMUFD. This causes link failures:
ld: vmlinux.o: in function `mock_domain_alloc_pgtable.isra.0':
selftest.c:(.text+0x12e8ad3): undefined reference to `pt_iommu_amdv1_init'
ld: vmlinux.o: in function `BSWAP_SHUFB_CTL':
sha1-avx2-asm.o:(.rodata+0xaa36a8): undefined reference to `pt_iommu_amdv1_read_and_clear_dirty'
ld: sha1-avx2-asm.o:(.rodata+0xaa36f0): undefined reference to `pt_iommu_amdv1_map_pages'
ld: sha1-avx2-asm.o:(.rodata+0xaa36f8): undefined reference to `pt_iommu_amdv1_unmap_pages'
ld: sha1-avx2-asm.o:(.rodata+0xaa3720): undefined reference to `pt_iommu_amdv1_iova_to_phys'
Adjust the kconfig to disable IOMMUFD_TEST if IOMMU_PT_AMDV1 is incompatible.
Fixes: e93d5945ed5b ("iommufd: Change the selftest to use iommupt instead of xarray")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512210135.freQWpxa-lkp@intel.com/
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
52 lines
1.7 KiB
Plaintext
52 lines
1.7 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config IOMMUFD_DRIVER_CORE
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bool
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default (IOMMUFD_DRIVER || IOMMUFD) if IOMMUFD!=n
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config IOMMUFD
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tristate "IOMMU Userspace API"
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select INTERVAL_TREE
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select INTERVAL_TREE_SPAN_ITER
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select IOMMU_API
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default n
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help
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Provides /dev/iommu, the user API to control the IOMMU subsystem as
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it relates to managing IO page tables that point at user space memory.
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If you don't know what to do here, say N.
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if IOMMUFD
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config IOMMUFD_VFIO_CONTAINER
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bool "IOMMUFD provides the VFIO container /dev/vfio/vfio"
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depends on VFIO_GROUP && !VFIO_CONTAINER
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default VFIO_GROUP && !VFIO_CONTAINER
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help
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IOMMUFD will provide /dev/vfio/vfio instead of VFIO. This relies on
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IOMMUFD providing compatibility emulation to give the same ioctls.
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It provides an option to build a kernel with legacy VFIO components
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removed.
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IOMMUFD VFIO container emulation is known to lack certain features
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of the native VFIO container, such as peer-to-peer
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DMA mapping, PPC IOMMU support, as well as other potentially
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undiscovered gaps. This option is currently intended for the
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purpose of testing IOMMUFD with unmodified userspace supporting VFIO
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and making use of the Type1 VFIO IOMMU backend. General purpose
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enabling of this option is currently discouraged.
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Unless testing IOMMUFD, say N here.
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config IOMMUFD_TEST
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bool "IOMMU Userspace API Test support"
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depends on DEBUG_KERNEL
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depends on FAULT_INJECTION
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depends on RUNTIME_TESTING_MENU
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depends on IOMMU_PT_AMDV1=y || IOMMUFD=IOMMU_PT_AMDV1
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select DMA_SHARED_BUFFER
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select IOMMUFD_DRIVER
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default n
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help
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This is dangerous, do not enable unless running
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tools/testing/selftests/iommu
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endif
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