> Put the magic restart_block syscall at some fixed place in every
> user process, change the PC to that. Or, alternatively, put the
> restart_block syscall insn on the stack and point the PC at that.
>
> This isn't rocket science :-)
Something like that was my first though as well. I would have played
games with return addresses inside the kernel instead of user space.
The idea to have another _TIF_xxx flag seems much cleaner though and
I want the cleanest solution for this. Once this is implemented every
system call can be restarted with a different system call number. Who
knows what other uses this might have?
blue skies,
Martin
Linux/390 Design & Development, IBM Deutschland Entwicklung GmbH
Schönaicherstr. 220, D-71032 Böblingen, Telefon: 49 - (0)7031 - 16-2247
E-Mail: schwidefsky@de.ibm.com
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This archive was generated by hypermail 2b29 : Sun Dec 15 2002 - 22:00:17 EST