Steven A. Falco wrote: > The rt_misc_get_io_region() has the "start" argument as an unsigned > long. On the PPC440, we have a 36-bit address space, where the I/O > registers are generally above the 4GB area. For example, the UART is at > address 0x1ef600300. > > The Linux request_region call has "start" typed as a resource_size_t, > which is a u64 on the PPC440 (i.e. CONFIG_RESOURCES_64BIT is set even > though this is a 23-bit processor). > > Is this something that should be handled by xeno-config? It could > append a CFLAG indicating the size of a resource.
Or use a 64bit long unconditionally, to keep the same kernel-based implementation, since there is no performance issue for this call. In any case, we need to fix the API before 2.4 final is out -- which will also affect the ABI, but it already changed during the 2.4 development phase anyway. > > Steve > > > _______________________________________________ > Xenomai-core mailing list > Xenomaiemail@example.com > https://mail.gna.org/listinfo/xenomai-core > -- Philippe. _______________________________________________ Xenomai-core mailing list Xenomaifirstname.lastname@example.org https://mail.gna.org/listinfo/xenomai-core