AMD 3200 Revision History - Page 50
AMD 3200 - Athlon 64 2.0 GHz Processor Manual
UPC - 730143241144
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Revision Guide for AMD Family 15h Models 00h-0Fh Processors 48063 Rev. 3.18 October 2012 658 CPUID Incorrectly Reports Large Page Support in L2 Instruction TLB Description The CPUID instruction incorrectly reports the number of entries and the associativity of 2 MB, 4 MB and 1 GB TLB entries in the L2 instruction TLB. The following CPUID fields are incorrectly zero: • CPUID Fn8000_0006_EAX[L2ITlb2and4MSize] • CPUID Fn8000_0006_EAX[L2ITlb2and4MAssoc] • CPUID Fn8000_0019_EBX[L2ITlb1GSize] • CPUID Fn8000_0019_EBX[L2ITlb1GAssoc] Potential Effect on System None expected. Suggested Workaround Software may substitute the following values to determine the number and associativity of large page L2 TLB entries: • CPUID Fn8000_0006_EAX[L2ITlb2and4MSize] = 1024 • CPUID Fn8000_0006_EAX[L2ITlb2and4MAssoc] = 6 • CPUID Fn8000_0019_EBX[L2ITlb1GSize] = 1024 • CPUID Fn8000_0019_EBX[L2ITlb1GAssoc] = 6 This workaround should only be implemented after checking for affected silicon family and model (CPUID Fn0000_0001_EAX[Extended Family, Family, Extended Model and Model]), and that the processor reports zero for these fields. Fix Planned Yes 50 Product Errata