On 2013-08-14 10:52, Stefan Hajnoczi wrote: > On Tue, Aug 13, 2013 at 04:13:03PM +0200, Jan Kiszka wrote: >> On 2013-08-13 15:45, Stefan Hajnoczi wrote: >>> On Tue, Aug 13, 2013 at 09:56:17AM +0200, Jan Kiszka wrote: >>> The details depend on your device, do you have a git repo I can look at >>> to understand your device model? >> >> Pushed my hacks here: >> >> git://git.kiszka.org/qemu.git queues/rt.new3 > > Excellent, thanks! Are you calling qemu_raise_irq() outside the global > mutex and how is it protected?
By luck and via many exceptions, specifically by disabling of HPET support (to avoid that it is involved in IRQ routing - or even used in legacy mode) and by relying on the direct delivery to the kernel in KVM mode. Yes, IRQ delivery is still a huge construction site for BQL-free device models. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux
