Messages in this thread | | | Date | Wed, 30 Sep 2009 09:27:56 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [RFC][v7][PATCH 8/9]: Define clone2() syscall |
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On Wed, 30 Sep 2009, Arnd Bergmann wrote: > > One more argument for this is that the new code is architecture independent > using user_stack_pointer(), while the original sys_clone is highly > architecture specific, which is a source for bugs when trying to > extend it.
Umm. I don't think that is possible.
You need architecture-specific code to even get access to all registers to copy and get a signal-handler-compatible stack frame. See for example arch/alpha/kernel/entry.S with the switch-stack thing etc. I don't think there is any way to make that even remotely architecture-neutral.
Linus
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