On Wed, Jan 08, 2003 at 09:12:03PM +0100, Maciej W. Rozycki wrote: > Well, like it or not, CAMs do not like multiple matches -- up to a > physical damage even. So they should be avoided if possible. While KSEG0 > won't match for any real address translation, there is a non-zero > probability of executing a tlbp for it as a result of buggy code or > execution gone wild (root running crashme?). I'm told the TLB Shutdown bit in the R4000 is basically implemented as an overcurrent protection. That is on many chips even a hit on several entries won't cause a tlb shutdown until the matches do result in the TLB drawing more than a certain current. A tlbp on a KSEG0 address shouldn't happen. If it's attempted we already have worse problems. Ralf
