On 2014-11-17 10:03, Samuel Thibault wrote: > Gleb Natapov, le Mon 17 Nov 2014 10:58:45 +0200, a écrit : >> Do you know how gnumach timekeeping works? Does it have a timer that fires each 1ms? >> Which clock device is it using? > > It uses the PIT every 10ms, in square mode > (PIT_C0|PIT_SQUAREMODE|PIT_READMODE = 0x36). Wow... how retro. That feature might be unsupported - does user space irqchip work better? Jan