On Tue, Jul 25, 2017 at 05:34:03PM +0200, Johannes Iber wrote:
I'm testing several boards concerning SMI latency. Now, I'm asking myself
where these interrupts come from.
I digged through the bits code and it seems that these SMIs are not provoked
by the tool? So where do the observed (sometimes hundreds) interrupts come
from in general?
System Management Interrupts (SMIs) are generated and handled above the
level of the OS (or BITS). They're handled in the BIOS, and they're
generated by mechanisms such as timers or hardware interrupts.
Eliminating them requires fixing the BIOS.