>>>>> On Fri, 03 Feb 2006 05:26:48 +0300, Sergei Shtylylov <sshtylyov@xxxxxxxxxxxxx> said: sshtylyov> And.. how do you imagine placing a NOP (which surely sshtylyov> just moves MFC0 down so that it's a 1st insn. on the next sshtylyov> page). What if it'll move it to the errata prone address sshtylyov> from a safe one instead? The NOP will break the "If mfc0 $12 follows store" condition. Actually, the condition is more strict. This is a code sequence from the errata. (It seems English version is not updated yet...) Load/Store instruction Load/Store/Sync instruction Mfc0 rt,rd ; rd is Status/Cause -- page boundary -- nop ; TLB mapped area For Cause register case, Linux modules should never read it so it would not be a problem. --- Atsushi Nemoto
