On 10/19/18 9:40 AM, McCarthy, Brian wrote: > it appears, that for FreeBSD XEN guests with SMP support, The IPIs get messed > up by intr_shuffle_irqs. The symptom is a smp_ipi_mtx > timeout during TLB shootdown. I've seen this mentioned in e-mails, with the > solution (without explanation) being to enable EARLY_AP_STARTUP. > The reason this works in BSD11 is that int_shuffle_irqs is conditionalixed > out on EARLY_AP_STARTUP. The real solution seems to be that > xi_cpu and/or ie_cpu should be set. I'm trying to figure out where that would > be (for our somewhat modified FreeBSD kernel).
Which version are you looking at? We fixed a bug along these lines just about a month ago -- see r338624-338631. -- Colin Percival Security Officer Emeritus, FreeBSD | The power to serve Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "[email protected]"
