> >1.) If I'm not mistaken switch_to changes current->flags without > >atomic operations and without any locks and sys_ptrace changes > >child->flags only protected by the big kernel lock. > > ptrace only operates on processes that are stopped. So there are no > locking issues - we've synchronized on a much higher level than a > spinlock or semaphore. In the 2.2 case the ptrace flags themselves are in the same flag set as the PF_ flags. In 2.4 that was fixed. That means there are some bizarre cases where current->flags might not be handled perfectly. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- Re: BUG: Global FPU corruption in 2.2 Ulrich Drepper
- Re: BUG: Global FPU corruption in 2.... Richard B. Johnson
- Re: BUG: Global FPU corruption i... Victor Zandy
- Re: BUG: Global FPU corruption i... Ulrich Drepper
- Re: BUG: Global FPU corrupt... David Konerding
- Re: BUG: Global FPU cor... Alan Cox
- Re: BUG: Global FPU corruption in 2.2 kees
- Re: BUG: Global FPU corruption in 2.2 Christian Ehrhardt
- Re: BUG: Global FPU corruption in 2.2 Erik Paulson
- Re: BUG: Global FPU corruption in 2.2 Linus Torvalds
- Re: BUG: Global FPU corruption in 2.2 Alan Cox
- Re: BUG: Global FPU corruption in 2.2 Christian Ehrhardt
- Re: BUG: Global FPU corruption in 2.... Michal Jaegermann
- BUG: USB/Reboot Collectively Unconscious
- Re: BUG: USB/Reboot Alan Cox
- Re: BUG: USB/Reboot Collectively Unconscious
- Re: BUG: USB/Reboot Alan Cox
- Re: BUG: USB/Reboot Collectively Unconscious
- Re: BUG: Global FPU corruption in 2.2 alad
- Re: BUG: Global FPU corruption in 2.2 alad
- Re: BUG: Global FPU corruption in 2.2 alad