Am 28.05.24 um 15:31 schrieb Arnd Bergmann:
From: Arnd Bergmann arnd@arndb.de
There is no !CONFIG_MMU version of vmf_insert_pfn():
arm-linux-gnueabi-ld: drivers/dma-buf/udmabuf.o: in function `udmabuf_vm_fault': udmabuf.c:(.text+0xaa): undefined reference to `vmf_insert_pfn'
Fixes: f7254e043ff1 ("udmabuf: use vmf_insert_pfn and VM_PFNMAP for handling mmap") Signed-off-by: Arnd Bergmann arnd@arndb.de
drivers/dma-buf/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig index e4dc53a36428..b46eb8a552d7 100644 --- a/drivers/dma-buf/Kconfig +++ b/drivers/dma-buf/Kconfig @@ -35,6 +35,7 @@ config UDMABUF default n depends on DMA_SHARED_BUFFER depends on MEMFD_CREATE || COMPILE_TEST
- depends on MMU help A driver to let userspace turn memfd regions into dma-bufs. Qemu can use this to create host dmabufs for guest framebuffers.
Acked-by: David Hildenbrand david@redhat.com