On 4/16/06, Arnd Bergmann <arnd@xxxxxxxx> wrote: > #define PER_CPU_BASE 0xe000000000000000UL /* arch dependant */ On ia64 the percpu area is at 0xffffffffffff0000 so that it can be addressed without tying up another register (all percpu addresses are small negative offsets from "r0"). When David Mosberger chose this address he said that gcc 4 would actually make ue of this, but I haven't checked the generated code to see whether it really is doing so. -Tony
