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A comment on How retiring segmentation in AMD64 long mode broke VMware (2006). Parent comment

Re:How retiring segmentation in AMD64 long mode broke VMware... by yuhong on Monday July 28, 2014 @01:26AM (#8095336)
Windows x64 used to emulate SAHF/LAHF and 3DNow! PREFETCH. This was eliminated in x64 Win8.1, ending support for all 90nm Prescott etc CPUs (the newer 65nm Cedar Mill etc are still supported).
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