AMD 3200 Revision History - Page 61
Instructions, Performing, Read-Modify-Write, Alter, Architectural, State, Before
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48063 Rev. 3.18 October 2012 Revision Guide for AMD Family 15h Models 00h-0Fh Processors 675 Instructions Performing Read-Modify-Write May Alter Architectural State Before #PF Description An instruction performing a read-modify-write operation may be presented with a page fault (#PF) after modifying architectural state. Potential Effect on System The processor may present a #PF exception after some of the instruction effects have been applied to the processor state. No system effect is observed unless the operating system's page fault handler has some dependency on this interim processor state, which is not the case in any known operating system software. The interim state does not impact program behavior if the operating system resolves the #PF and resumes the instruction. However, this interim state may be observed by a debugger or if the operating system changes the #PF to a program error (for example, a segmentation fault). Suggested Workaround None recommended. Fix Planned Yes Product Errata 61