Re: [PATCH] New phys_addr() syscall
Richard Gooch (Richard.Gooch@atnf.CSIRO.AU)
Tue, 21 Jul 1998 17:43:00 +1000
Chris Wedgwood writes:
> On Tue, Jul 21, 1998 at 04:47:13PM +1000, Richard Gooch wrote:
>
> > Aside: I've switched to an ioctl(2) interface on /proc/*/mem.
> > The problem is that the return value is an int, which is only 32
> > bits. Won't this be a problem for 64 machines with over 4 GBytes of
> > RAM?
>
> err = ioctl(fd,RGOOCH_FUNKY_STUFF,&some_data_to_fill_out);
>
> addr = some_data_to_fill_out.addr;
That is in effect what I'm doing. What Richard Henderson was
suggesting was that I do away with the copy_*_user stuff and use the
return argument directly. That won't work because it's an int (32
bits).
Regards,
Richard....
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