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0b043644c0
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>
19 lines
786 B
Plaintext
19 lines
786 B
Plaintext
config RDMA_SIW
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tristate "Software RDMA over TCP/IP (iWARP) driver"
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depends on INET && INFINIBAND && LIBCRC32C && 64BIT
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select DMA_VIRT_OPS
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help
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This driver implements the iWARP RDMA transport over
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the Linux TCP/IP network stack. It enables a system with a
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standard Ethernet adapter to interoperate with a iWARP
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adapter or with another system running the SIW driver.
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(See also RXE which is a similar software driver for RoCE.)
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The driver interfaces with the Linux RDMA stack and
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implements both a kernel and user space RDMA verbs API.
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The user space verbs API requires a support
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library named libsiw which is loaded by the generic user
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space verbs API, libibverbs. To implement RDMA over
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TCP/IP, the driver further interfaces with the Linux
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in-kernel TCP socket layer.
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