On Fri, Sep 19, 2008 at 06:34:06PM +0200, =?ISO-8859-1?Q?S=E9bastien_Chr=E9tien_ wrote: > The first is ioremap(0x20000000,0x10000000); > The second is ioremap(0x80000000,0x10000000); > Is it too long Well, you're trying to allocate two 256MB regions. That is very large. What kind of device are you trying to map? g.