- // Returns true if the fault was "good"; otherwise, the caller
- // should dump regs. exec should only be used if the CPU
- // implements per-page exec protection; otherwise, treat it
- // as a read.
+ // Returns negative if the fault was "good"; otherwise, a fault
+ // code corresponding to MemoryFault.Cause is returned. exec
+ // should only be set if the CPU implements per-page exec
+ // protection; otherwise, treat it as a read.