Timur Tabi <[email protected]> writes:
> Also, does the pgd/pmd/pte page-table walking work on addresses
> returned by kmalloc(), or do I have to use __pa() to get the physical
> address?
You should use vmalloc_to_page() (this does the page-table walking
with correct locking), then the usual dma mapping interface
(pci_map_page() or pci_map_sg()) to get bus address(es) you can pass
to your device for DMA.
Gerd
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