[openib-general] Re: registering read-only memory

[Roland Dreier]

    Eli> I saw this this on Suse 9.3 and the memory was like: static
    Eli> const char *my_string = "Hello world"; defined locally in a
    Eli> function. This produced a VMA with VM_IO set.

What kernel version/architecture?

I'm having a hard time seeing how it's possible to get a VMA with
VM_IO set except by using remap_pfn_range(), and I can't see how
ordinary const data from userspace could cause that.

 - R.