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RMDA/siw: Require a 64 bit arch 

The new siw driver fails to build on i386 with

drivers/infiniband/sw/siw/siw_qp.c:1025:3: error: invalid output size for constraint '+q'
                smp_store_mb(*cq->notify, SIW_NOTIFY_NOT);

As it is using 64 bit values with the smp_store_mb.

Since the entire scheme here seems questionable, and we are in the merge
window, fix the compile failures by disabling 32 bit support on this
driver.

A proper fix will be reviewed post merge window.

Fixes: c0cf5bdde4 ("rdma/siw: addition to kernel build environment")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Jason Gunthorpe 2019-07-12 12:12:06 -03:00
parent cea743f2ea
commit 0b043644c0
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/sw/siw/Kconfig
View File

@ -1,6 +1,6 @@
config RDMA_SIW
tristate "Software RDMA over TCP/IP (iWARP) driver"
depends on INET && INFINIBAND && LIBCRC32C
depends on INET && INFINIBAND && LIBCRC32C && 64BIT
select DMA_VIRT_OPS
help
This driver implements the iWARP RDMA transport over