Messages in this thread |  | | | Date | Tue, 11 Dec 2007 15:15:55 +0100 | | From | Rene Herman <> | | Subject | Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops | |
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
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