On 07/11/2018 10:30, Sander Eikelenboom wrote: > Hi Juergen / Boris, > > Last week i tested Linux kernel 4.19.0 stable with the Xen "for-linus-4.20" > branch pulled on top. > Unfortunately i was seeing guests lockup after some time, see below for the > logging from one of the guest > which i was able to capture. > Reverting "xen: make xen_qlock_wait() nestable" > 7250f6d35681dfc44749d90598a2d51a118ce2b8, > made the lockups disappear. > > These guests are stressed quite hard in both CPU and networking, > so they are probably more susceptible to locking issues. > > System is a AMD phenom x6, running Xen-unstable. > > Any ideas ?
Just checked the hypervisor again: it seems a pending interrupt for a HVM/PVH vcpu won't let SCHEDOP_poll return in case interrupts are disabled. I need to rework the patch for that scenario. Until then I'll revert it. Juergen _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
