Re: [PATCH v3 10/11] xen/arm: introduce phys/dma translations in xen_dma_sync_for_*

[Jürgen Groß <jgross@xxxxxxxx>]

On 11.07.20 00:34, Stefano Stabellini wrote:
> From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
>
> xen_dma_sync_for_cpu, xen_dma_sync_for_device, xen_arch_need_swiotlb are
> getting called passing dma addresses. On some platforms dma addresses
> could be different from physical addresses. Before doing any operations
> on these addresses we need to convert them back to physical addresses
> using dma_to_phys.
>
> Move the arch_sync_dma_for_cpu and arch_sync_dma_for_device calls from
> xen_dma_sync_for_cpu/device to swiotlb-xen.c, and add a call dma_to_phys
> to do address translations there.
>
> dma_cache_maint is fixed by the next patch.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
> Tested-by: Corey Minyard <cminyard@xxxxxxxxxx>
> Tested-by: Roman Shaposhnik <roman@xxxxxxxxxx>
Acked-by: Juergen Gross <jgross@xxxxxxxx>


Juergen