Amit Shah <amit.shah@xxxxxxxxxxxx> writes:
> +
> +static struct page *page;
> +static unsigned long page_gfn;
Bad variable names
> +
> +const struct dma_mapping_ops *orig_dma_ops;
I suspect real dma ops stacking will need some further thought than
your simple hacks
> +
> + match = find_matching_pt_dev(&pt_devs_head, &pv_pci_info);
> + if (match) {
> + r = match->is_pv;
> + goto out;
> + }
> +
> + memcpy(page_address(page), &pv_pci_info, sizeof(pv_pci_info));
Note that on 32bit page_address() might be not mapped.
> +
> + npages = get_order(size) + 1;
Are you sure that's correct? It looks quite bogus. order is a 2 logarithm,
normally npages = 1 << order
if you want npages from order the correct need 1 << order
Haven't read further, but to be honest the code doesn't seem to be anywhere
near merging quality.
-Andi
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