mirror of
https://github.com/torvalds/linux.git
synced 2024-12-15 07:33:56 +00:00
9cc12ad6db
The infiniband subsystem causes a link failure when the umem
driver is built on MMU-less systems:
mm/mmu_notifier.o: In function `do_mmu_notifier_register':
mmu_notifier.c:(.text+0x32): undefined reference to `mm_take_all_locks'
drivers/infiniband/core/umem.o: In function `ib_umem_get':
umem.c:(.text+0x132): undefined reference to `can_do_mlock'
drivers/infiniband/core/umem_odp.o: In function `ib_umem_odp_map_dma_pages':
umem_odp.c:(.text+0x766): undefined reference to `get_user_pages_remote'
This bug has existed for a while but only become apparent in ARM
randconfig builds when the dependency on PCI was lifted, as none
of the ARM-NOMMU targets support PCI at the moment.
We could probably get the umem driver to build by providing an
alternative implementation 'can_do_mlock()' that returns false
on NOMMU-systems, but then we'd still have a problem with the
mmu-notifiers required by CONFIG_INFINIBAND_ON_DEMAND_PAGING,
so simply forbidding umem with NOMMU seems like the simplest
workaround.
Fixes: 931bc0d916 ("IB: Move PCI dependency from root KConfig to HW's KConfigs")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
108 lines
3.4 KiB
Plaintext
108 lines
3.4 KiB
Plaintext
menuconfig INFINIBAND
|
|
tristate "InfiniBand support"
|
|
depends on HAS_IOMEM
|
|
depends on NET
|
|
depends on INET
|
|
depends on m || IPV6 != m
|
|
select IRQ_POLL
|
|
---help---
|
|
Core support for InfiniBand (IB). Make sure to also select
|
|
any protocols you wish to use as well as drivers for your
|
|
InfiniBand hardware.
|
|
|
|
if INFINIBAND
|
|
|
|
config INFINIBAND_USER_MAD
|
|
tristate "InfiniBand userspace MAD support"
|
|
depends on INFINIBAND
|
|
---help---
|
|
Userspace InfiniBand Management Datagram (MAD) support. This
|
|
is the kernel side of the userspace MAD support, which allows
|
|
userspace processes to send and receive MADs. You will also
|
|
need libibumad from <http://www.openfabrics.org/downloads/management/>.
|
|
|
|
config INFINIBAND_USER_ACCESS
|
|
tristate "InfiniBand userspace access (verbs and CM)"
|
|
select ANON_INODES
|
|
---help---
|
|
Userspace InfiniBand access support. This enables the
|
|
kernel side of userspace verbs and the userspace
|
|
communication manager (CM). This allows userspace processes
|
|
to set up connections and directly access InfiniBand
|
|
hardware for fast-path operations. You will also need
|
|
libibverbs, libibcm and a hardware driver library from
|
|
<http://www.openfabrics.org/git/>.
|
|
|
|
config INFINIBAND_EXP_USER_ACCESS
|
|
bool "Allow experimental support for Infiniband ABI"
|
|
depends on INFINIBAND_USER_ACCESS
|
|
---help---
|
|
IOCTL based ABI support for Infiniband. This allows userspace
|
|
to invoke the experimental IOCTL based ABI.
|
|
These commands are parsed via per-device parsing tree and
|
|
enables per-device features.
|
|
|
|
config INFINIBAND_USER_MEM
|
|
bool
|
|
depends on INFINIBAND_USER_ACCESS != n
|
|
depends on MMU
|
|
default y
|
|
|
|
config INFINIBAND_ON_DEMAND_PAGING
|
|
bool "InfiniBand on-demand paging support"
|
|
depends on INFINIBAND_USER_MEM
|
|
select MMU_NOTIFIER
|
|
default y
|
|
---help---
|
|
On demand paging support for the InfiniBand subsystem.
|
|
Together with driver support this allows registration of
|
|
memory regions without pinning their pages, fetching the
|
|
pages on demand instead.
|
|
|
|
config INFINIBAND_ADDR_TRANS
|
|
bool
|
|
depends on INFINIBAND
|
|
default y
|
|
|
|
config INFINIBAND_ADDR_TRANS_CONFIGFS
|
|
bool
|
|
depends on INFINIBAND_ADDR_TRANS && CONFIGFS_FS && !(INFINIBAND=y && CONFIGFS_FS=m)
|
|
default y
|
|
---help---
|
|
ConfigFS support for RDMA communication manager (CM).
|
|
This allows the user to config the default GID type that the CM
|
|
uses for each device, when initiaing new connections.
|
|
|
|
source "drivers/infiniband/hw/mthca/Kconfig"
|
|
source "drivers/infiniband/hw/qib/Kconfig"
|
|
source "drivers/infiniband/hw/cxgb3/Kconfig"
|
|
source "drivers/infiniband/hw/cxgb4/Kconfig"
|
|
source "drivers/infiniband/hw/i40iw/Kconfig"
|
|
source "drivers/infiniband/hw/mlx4/Kconfig"
|
|
source "drivers/infiniband/hw/mlx5/Kconfig"
|
|
source "drivers/infiniband/hw/nes/Kconfig"
|
|
source "drivers/infiniband/hw/ocrdma/Kconfig"
|
|
source "drivers/infiniband/hw/vmw_pvrdma/Kconfig"
|
|
source "drivers/infiniband/hw/usnic/Kconfig"
|
|
source "drivers/infiniband/hw/hns/Kconfig"
|
|
|
|
source "drivers/infiniband/ulp/ipoib/Kconfig"
|
|
|
|
source "drivers/infiniband/ulp/srp/Kconfig"
|
|
source "drivers/infiniband/ulp/srpt/Kconfig"
|
|
|
|
source "drivers/infiniband/ulp/iser/Kconfig"
|
|
source "drivers/infiniband/ulp/isert/Kconfig"
|
|
|
|
source "drivers/infiniband/ulp/opa_vnic/Kconfig"
|
|
source "drivers/infiniband/sw/rdmavt/Kconfig"
|
|
source "drivers/infiniband/sw/rxe/Kconfig"
|
|
|
|
source "drivers/infiniband/hw/hfi1/Kconfig"
|
|
|
|
source "drivers/infiniband/hw/qedr/Kconfig"
|
|
|
|
source "drivers/infiniband/hw/bnxt_re/Kconfig"
|
|
|
|
endif # INFINIBAND
|