swiotlb-xen: remove start_dma_addr

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It is not strictly needed. Call virt_to_phys on xen_io_tlb_start
instead. It will be useful not to have a start_dma_addr around with the
next patches.

Note that virt_to_phys is not the same as xen_virt_to_bus but actually
it is used to compared again __pa(xen_io_tlb_start) as passed to
swiotlb_init_with_tbl, so virt_to_phys is actually what we want.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Tested-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Roman Shaposhnik <roman@zededa.com>
Link: https://lore.kernel.org/r/20200710223427.6897-2-sstabellini@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>

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Stefano Stabellini 2020-07-10 15:34:18 -07:00 • committed by Juergen Gross

parent 8b1e868f66

commit ae4f0a17ee

1 changed files with 2 additions and 5 deletions

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drivers/xen/swiotlb-xen.c

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