> So you have, for example: > > unsigned long __must_check copy_mc_to_kernel(void *dst, const void *src, unsigned len) > > Now imagine you get a MCE for *dst which is some kernel page which > cannot be poisoned: direct map, kernel text, and so on. At least on Intel you can only get a machine check for operation on poison data LOAD. Not for a STORE. I believe that is generally true - other arches to confirm. So there can't me a machine check on "*dst". -Tony
