On 06/11/2010 02:20 AM, Kenji Kaneshige wrote: > If the physical address is too high to be handled by ioremap() in > x86_32 PAE (e.g. more than 36-bit physical address), ioremap() must > return error (NULL). However, current x86 ioremap try to map this too > high physical address, and it causes unexpected behavior. What unexpected behavior? It is perfectly legitimately to map such a high address in PAE mode. We have a 36-bit kernel-imposed limit on *RAM* in 32-bit mode (because we can't manage more than that), but there is no reason it should apply to I/O. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
