Messages in this thread | | | From | "Ulrich Windl" <> | Date | Tue, 9 Apr 1996 11:23:04 +0100 | Subject | Re: 1.2.13 __generic_memcpy_tofs cures crashes |
| |
On 9 Apr 96 at 9:42, Alan Cox wrote:
> > movsl", on the assumption that the interlock problem is between the > > shift/movsl instruction (but that's unlikely: that particular > > combination shows up even in normal code). That would be: > > Actually Linus take a look at the pentium errata for some steppings. Im > sure one of the early 100MHz parts had a bug for something like rep movs* > instructions taking a path that was out of spec under a few conditions. > I'll look it up tonight. > > So maybe the cyrix has a similar oops ;) > > Alan
It sounds hard for the victims, but it seems to be wise to get a new CPU. The clib also uses assembler, and gcc creates such patterns, too. BTW does anybody know of a similar problem in an AMD 486 DX/4 100MHz?
Ulrich
| |