diff options
| author | Jason Gunthorpe <jgg@mellanox.com> | 2018-09-28 23:20:23 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-10-04 00:01:03 +0200 |
| commit | 914e5d7d4697fb9815fa237a4d42bfb952bf48d6 (patch) | |
| tree | 9a232dc5d8e07c839bb12141be7a3e2c1a217253 /drivers/infiniband/Kconfig | |
| parent | RDMA/cma: Introduce and use cma_ib_acquire_dev() (diff) | |
| download | linux-914e5d7d4697fb9815fa237a4d42bfb952bf48d6.tar.xz linux-914e5d7d4697fb9815fa237a4d42bfb952bf48d6.zip | |
RDMA: Fix building with CONFIG_MMU=n
The zap_vma_ptes() is declared but not defined on NOMMU kernels, causing a
link error for the newly added uverbs code:
drivers/infiniband/core/uverbs_main.o: In function `uverbs_user_mmap_disassociate':
uverbs_main.c:(.text+0x114c): undefined reference to `zap_vma_ptes'
drivers/infiniband/core/uverbs_main.o: In function `rdma_umap_open':
uverbs_main.c:(.text+0x53c): undefined reference to `zap_vma_ptes'
Since all user access for all of our drivers depend on remapping pages to
user space disable USER_ACCESS when there is no mmu.
Fixes: 5f9794dc94f5 ("RDMA/ucontext: Add a core API for mmaping driver IO memory")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/Kconfig')
| -rw-r--r-- | drivers/infiniband/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig index abb6660c099c..0a3ec7c726ec 100644 --- a/drivers/infiniband/Kconfig +++ b/drivers/infiniband/Kconfig @@ -26,6 +26,7 @@ config INFINIBAND_USER_MAD config INFINIBAND_USER_ACCESS tristate "InfiniBand userspace access (verbs and CM)" select ANON_INODES + depends on MMU ---help--- Userspace InfiniBand access support. This enables the kernel side of userspace verbs and the userspace |