Hello, I want to use rtdm_iomap_to_user() to map our device registers to user space. But this doesn't work, our application just crashes when I read from the mapped registers.
When I insert the line vma->vm_page_prot = phys_mem_access_prot(filp, paddr>>PAGE_SHIFT, size, vma->vm_page_prot); in rtdm_mmap_buffer() just before calling xnarch_remap_io_page_range() it works fine. This is just like it is done in /drivers/char/mem.c and in /drivers/video/fbmem.c. But I think this is architecture and kernel version dependent and I don't know whether rtdm_mmap_buffer() is the right place. I use Xenomai 2.3.1 and Linux 2.6.18 with PowerPC CPU. What is the best solution? Everyone else seen this problem? Thanks Markus
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