Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64with MCP51 laptops

[Rene Herman]

On 11-12-07 14:32, Paul Rolland wrote:

> > On 11-12-07 13:08, David Newall wrote:
> >
> > > Rene Herman wrote:
>
> > (*) some local testing shows it to be almost exactly that for both out and 
> > in on my own PC -- a little over. If anyone cares, see attached little test 
> > program. The "little over" I don't worry about. 0 us delay is also fine for 
> > me and if any code was _that_ fragile it would have broken long ago.
>
> Some results :

Okay, these vary to wildly for you and might I suppose be a serialising 
artifact or some such. Give me a bit and I'll try to improve it...

Rene
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/