From faa37ff3bf18d5242fe3d54f5462b1c3254c2567 Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Tue, 6 Jan 2026 15:22:11 -0400 Subject: [PATCH] iommufd/selftest: Add missing kconfig for DMA_SHARED_BUFFER 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 Signed-off-by: Joerg Roedel --- drivers/iommu/iommufd/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/iommufd/Kconfig b/drivers/iommu/iommufd/Kconfig index eae3f03629b0..7e41e3ccea75 100644 --- a/drivers/iommu/iommufd/Kconfig +++ b/drivers/iommu/iommufd/Kconfig @@ -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 help