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iommufd/selftest: Add missing kconfig for DMA_SHARED_BUFFER

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The test doesn't build without it, dma-buf.h does not provide stub
functions if it is not enabled. Compilation can fail with:

 ERROR:root:ld: vmlinux.o: in function `iommufd_test':
 (.text+0x3b1cdd): undefined reference to `dma_buf_get'
 ld: (.text+0x3b1d08): undefined reference to `dma_buf_put'
 ld: (.text+0x3b2105): undefined reference to `dma_buf_export'
 ld: (.text+0x3b211f): undefined reference to `dma_buf_fd'
 ld: (.text+0x3b2e47): undefined reference to `dma_buf_move_notify'

Add the missing select.

Fixes: d2041f1f11dd ("iommufd/selftest: Add some tests for the dmabuf flow")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Jason Gunthorpe 2026-01-06 15:22:11 -04:00 committed by Joerg Roedel
parent cefd81e76a
commit faa37ff3bf
1 changed files with 1 additions and 0 deletions
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drivers/iommu/iommufd/Kconfig
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@ -42,6 +42,7 @@ config IOMMUFD_TEST
depends on FAULT_INJECTION
depends on RUNTIME_TESTING_MENU
depends on IOMMU_PT_AMDV1
select DMA_SHARED_BUFFER
select IOMMUFD_DRIVER
default n
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