On Sat, 2005-04-09 at 06:38 +0200, Ingo Molnar wrote: > * Luck, Tony <[EMAIL PROTECTED]> wrote: > > > >tested on x86, and all other arches should work as well, but if an > > >architecture has irqs-off assumptions in its switch_to() logic > > >it might break. (I havent found any but there may such assumptions.) > > > > The ia64_switch_to() code includes a section that can change a pinned > > MMU mapping (when the stack for the new process is in a different > > granule from the stack for the old process). [...] > > thanks - updated patch below. Any other architectures that switch the > kernel stack in a nonatomic way? x86/x64 switches it atomically.
ppc64 already has a local_irq_save/restore in switch_to, around the low level asm bits, so it should be fine. Ben.
