On Wed, Nov 30, 2022 at 12:09:45PM -0800, Randy Dunlap wrote:
> When building qib_wc_x86_64.c on ARCH=um, references to some cpuinfo
> fields cause build errors since cpuinfo does not contain x86-specific
> fields.
>
> Fix the build errors by making this driver depend on !UML.
>
> Prevents these build errors:
>
> ../drivers/infiniband/hw/qib/qib_wc_x86_64.c: In function ‘qib_unordered_wc’:
> ../drivers/infiniband/hw/qib/qib_wc_x86_64.c:149:29: error: ‘struct cpuinfo_um’ has no member named ‘x86_vendor’
> 149 | return boot_cpu_data.x86_vendor != X86_VENDOR_AMD;
> ../drivers/infiniband/hw/qib/qib_wc_x86_64.c:149:44: error: ‘X86_VENDOR_AMD’ undeclared (first use in this function); did you mean ‘X86_VENDOR_ANY’?
> 149 | return boot_cpu_data.x86_vendor != X86_VENDOR_AMD;
> ../drivers/infiniband/hw/qib/qib_wc_x86_64.c:149:44: note: each undeclared identifier is reported only once for each function it appears in
> ../drivers/infiniband/hw/qib/qib_wc_x86_64.c:150:1: error: control reaches end of non-void function [-Werror=return-type]
> 150 | }
>
> Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Cc: Leon Romanovsky <leon@xxxxxxxxxx>
> Cc: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxxxxxxxxxxxxx>
> Cc: linux-rdma@xxxxxxxxxxxxxxx
> Cc: Jeff Dike <jdike@xxxxxxxxxxx>
> Cc: Richard Weinberger <richard@xxxxxx>
> Cc: Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>
> Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
> Cc: linux-um@xxxxxxxxxxxxxxxxxxx
> ---
> v2: rebase & resend
>
> drivers/infiniband/hw/qib/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff -- a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig
> --- a/drivers/infiniband/hw/qib/Kconfig
> +++ b/drivers/infiniband/hw/qib/Kconfig
> @@ -3,6 +3,7 @@ config INFINIBAND_QIB
> tristate "Intel PCIe HCA support"
> depends on 64BIT && INFINIBAND_RDMAVT
> depends on PCI
> + depends on !UML
I would advocate to add this line to whole drivers/infiniband.
None of RDMA code makes sense for UML.
Thanks
> help
> This is a low-level driver for Intel PCIe QLE InfiniBand host
> channel adapters. This driver does not support the Intel
