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Only supporting a single region/range is limiting, wasteful, and in some cases broken (i.e. when there are large gaps in the iova memory ranges). Fix this by adding support for multiple regions based on what the device tells the driver it can support. Signed-off-by: Brett Creeley <brett.creeley@amd.com> Signed-off-by: Shannon Nelson <shannon.nelson@amd.com> Link: https://lore.kernel.org/r/20231117001207.2793-7-brett.creeley@amd.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>