lkml.org 
[lkml]   [2009]   [Sep]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][v7][PATCH 8/9]: Define clone2() syscall


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


\
 
 \ /
  Last update: 2009-10-18 23:28    [W:0.065 / U:0.332 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site