On Wed, 14 Dec 2011, Avi Kivity wrote: > On 12/14/2011 02:16 PM, Marcelo Tosatti wrote: > > > Having this controlled from userspace means it doesn't work for SIGSTOP > > > or for long scheduling delays. What about doing this automatically > > > based on preempt notifiers? > > > > Long scheduling delays should be considered hangups from the guest > > perspective. > > Why? To the guest it looks like slow hardware, but it will interpret it > as a softlockup. > > > About SIGSTOP, that is a corner case. Unsure if its even properly supported > > by QEMU. > > It works from my experience. > > -- > error compiling committee.c: too many arguments to function >
And if the soft lockup warning is a concern here, we can have a SIGCONT handler set the flag the same way qemu stop/cont does.
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