Wednesday, December 3, 2008

Core i7 'Nehalem' also have TLB issue

If you open Intel’s official document that is stored here, on page 37 AAJ1 Clarification of TRANSLATION LOOKASIDE BUFFERS (TLBS) Invalidation part, you will see that Intel says that in some rare cases improper TLB invalidation may result in unpredictable system behavior and can hang your OS or result with incorrect data.

Here is the word to word quote: "In rare instances, improper TLB invalidation may result in unpredictable system behavior, such as system hangs or incorrect data. Developers of operating systems should take this documentation into account when designing TLB invalidation algorithms. For the processors affected, Intel has provided a recommended update to system and BIOS vendors to incorporate into their BIOS to resolve this issue."

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