On Sun, Sep 15, 2019 at 04:01:08PM -0700, Guenter Roeck wrote:
> Upstream commit e4849aff1e16 ("MIPS: SiByte: Enable swiotlb for SWARM,
> LittleSur and BigSur") results in build failures in v4.4.y and v4.14.y.
>
> make bigsur_defconfig:
>
> warning: (SIBYTE_SWARM && SIBYTE_SENTOSA && SIBYTE_BIGSUR && SWIOTLB_XEN && AMD_IOMMU) selects SWIOTLB which has unmet direct dependencies (CAVIUM_OCTEON_SOC || MACH_LOONGSON64 && CPU_LOONGSON3 || NLM_XLP_BOARD || NLM_XLR_BOARD)
> warning: (SIBYTE_SWARM && SIBYTE_SENTOSA && SIBYTE_BIGSUR && SWIOTLB_XEN && AMD_IOMMU) selects SWIOTLB which has unmet direct dependencies (CAVIUM_OCTEON_SOC || MACH_LOONGSON64 && CPU_LOONGSON3 || NLM_XLP_BOARD || NLM_XLR_BOARD)
>
> and the actual build:
>
> lib/swiotlb.o: In function `swiotlb_tbl_map_single':
> (.text+0x1c0): undefined reference to `iommu_is_span_boundary'
> Makefile:1021: recipe for target 'vmlinux' failed
>
> Please revert.
Shouldn't I also revert it in 4.9.y?
thanks,
greg k-h
