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SubjectRe: Linux serial console patch
Russell King wrote:
> On Mon, Sep 06, 2004 at 10:32:27AM +0000, Danny ter Haar wrote:
>
>>James Courtier-Dutton <James@superbug.demon.co.uk> wrote:
>>
>>>>I have read your posts to lkml containing your serial console flow control
>>>>patches firstly for 2.4.x and then for 2.6.x kernels.
>>>
>>>Does this fix junk being output from the serial console?
>>>If one is using Pentium 4 HT, it seems that both CPU cores try to send
>>>characters to the serial port at the same time, resulting in lost
>>>characters as one CPU over writes the output from the other.
>>
>>We have multiple P4-HT enabled servers with debian installed & serial
>>console enabled (RPB++ ;-) and _i_ have never seen this behaviour.
>
>
> I don't think this is a serial problem as such, but a problem with the
> kernel console subsystem (printk) itself. Maybe James can provide an
> example output to confirm exactly what he's seeing.
>

http://www.superbug.demon.co.uk/latency/

There are 2 oops traces there. At about line 176, the corruption starts.

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