Alexey Kardashevskiy <aik@xxxxxxxxx> writes:
> diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
> index 5f202a566ec5..9bace5df05d5 100644
> --- a/arch/powerpc/kernel/iommu.c
> +++ b/arch/powerpc/kernel/iommu.c
> @@ -1004,6 +1004,29 @@ long iommu_tce_xchg(struct iommu_table *tbl, unsigned long entry,
> }
> EXPORT_SYMBOL_GPL(iommu_tce_xchg);
>
> +long iommu_tce_xchg_rm(struct iommu_table *tbl, unsigned long entry,
> + unsigned long *hpa, enum dma_data_direction *direction)
> +{
> + long ret;
> +
> + ret = tbl->it_ops->exchange_rm(tbl, entry, hpa, direction);
> +
> + if (!ret && ((*direction == DMA_FROM_DEVICE) ||
> + (*direction == DMA_BIDIRECTIONAL))) {
> + struct page *pg = realmode_pfn_to_page(*hpa >> PAGE_SHIFT);
This breaks the corenet64_smp_defconfig build:
arch/powerpc/kernel/iommu.c:1037:21: error: implicit declaration of function 'realmode_pfn_to_page' [-Werror=implicit-function-declaration]
I think you can probably just put it inside #ifdef CONFIG_PPC_BOOK3S_64.
cheers
