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AMD Confidential
User Manual September 12
th
, 2008
Appendix A 189
The code we execute in step 6 will probably be the old code because our page-based
coherency mechanism depends on the software TLB to write protect pages which have
x86 code that has been translated. However, this mechanism protects physical pages
through the virtual mapping mechanism and this mechanism only knows about one
virtual address mapping, not all possible mappings of any code page.