Keshavamurthy, Anil wrote on Thursday, November 02, 2006 11:39 AM > > > > Do you allow kprobe insertion on "L+X" instruction? It looks like so. > > > > Then how do you maintain atomic update to L and X instruction right > > > > now with memcpy? > > Instruction Type "L+X" take two instruction slots i.e slot 1 and slot 2, > but we only modify slot 2 to insert or remove the break and slot 2 nicely > happens to be in the upper 8 bytes of the instruction bundle. So we don't have any > issues here. For either inserting or removing break for "L+X" we don;t modify Slot 1 > value at all. I wasn't aware that X slot can be encoded with break.i. In that case, yes, only slot 2 is modified and everything is fine. I guess the compatibility mode saves the day for patching "L+X". - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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