> + if ((dma_addr & (PAGE_SIZE - 1)) ||
> + ((dma_addr + dma_len) & (PAGE_SIZE - 1)) ||
> + ((i == (sg_cnt - 1)) && !unaligned)) {
> + srp_fmr->io_addr = dma_addr & PAGE_MASK;
> + ++unaligned;
> + }
> +
> + if (unaligned <= 1) {
> + cur_len += dma_len;
> + for (base_addr = dma_addr;
> + (dma_addr & PAGE_MASK) <=
> + ((base_addr + dma_len - 1) & PAGE_MASK);
> + dma_addr += PAGE_SIZE)
> + dma_pages[page_cnt++] = dma_addr & PAGE_MASK;
> + }
> +
> + if ((unaligned > 1) || (i == (sg_cnt - 1))) {
this is definitly completely broken. dma_addr_ts are opaqueue handles,
some platforms use high bits in them for iommu flags.
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