Bug#447245: zaptel-source: OSLEC echo canceler renders zaptel channels unusable

[Faidon Liambotis]

Tzafrir Cohen wrote:
> On Thu, Dec 27, 2007 at 03:40:32AM +0200, Tzafrir Cohen wrote:
>> Some progress: after much debugging, David Rowe noticed that at least 
>> one source of problems is the following code from oslec/oslec_wrap.c:
>>
>> static __inline__ uint64_t cycles(void) {
>>   uint64_t x;
>>   __asm__ volatile ("rdtsc\n\t" : "=A" (x));
>>   return x;
>> }
>>
>>
>> This seems to cause harm on amd64. Is this a problem with AMD? with x86_64?
> 
> Could you please try the attaced patch?
As you are aware, I was experiencing the bug myself on my x86_64 (Intel
Core 2) system. The patch definitely fixes my problem :)
Are there any side-effects with this patch or is it safe to apply it as-is?

Alessandro, reportbug said that your system is an i686/k7; did you file
the report from the system that you were experiencing the problem?

Regards,
Faidon