Christoph Hellwig c6af2aa9ff
swiotlb: make the swiotlb_init interface more useful ...
Pass a boolean flag to indicate if swiotlb needs to be enabled based on
the addressing needs, and replace the verbose argument with a set of
flags, including one to force enable bounce buffering.
Note that this patch removes the possibility to force xen-swiotlb use
with the swiotlb=force parameter on the command line on x86 (arm and
arm64 never supported that), but this interface will be restored shortly.
Signed-off-by: Christoph Hellwig <hch@lst.de >
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com >
Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com >
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