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The max order allowed by the protocol is 9. Increase the max order supported by QEMU to 9 to increase performance. Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com> Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com> Message-Id: <20200521192627.15259-3-sstabellini@kernel.org> Signed-off-by: Greg Kurz <groug@kaod.org>