OK, I appended apic_tack=2 and yes, it survives several hdparms! Great, so gonna try if it is really stable.Then I can try =1. CPU cooling down. Already at 46°C. :-)
Not bad,not bad, though I saw a small performace degration: hdparm gives me 60-61mb/s instead of >62mb/s, but I won't complain. :-)
Ahh yes.. missing the kernel line argument will make a difference. I'm
running apic_tack=2 as well. From what I remember =2 was the "better"
patch option if it made your system stable.