9fans archive / 1997 / 04 / 68    prev next

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From: Milon Papezik papezik@dcs... Subject: porting linux programs and drivers to plan9 Date: Mon, 21 Apr 1997 16:53:08 +0200 (MET DST) > presotto@pla... writes: > > > [a fascinating account of how the Pentium Pro's out-of-order > > instruction execution breaks the Plan 9 sleep/wakeup code on > > a multi-CPU system] > > It appears that the slightly different version of sleep/wakeup > given in the Volume 2 paper `Process Sleep and Wakeup on a > Shared-memory Multiprocessor' should be immune to the effects > of weak memory coherency, because the shared variables are > referenced only inside a lock/unlock pair. Is this right? Which paper do you mean? Any pointers would be appreciated... Thanks in advance! Milon ---------------------------------------------------------------------- Milon Papezik, Technical University of Brno, Dept. of Computer Science