------- Comment From mranw...@us.ibm.com 2019-08-21 03:21 EDT------- I did testing on this and got the same results. The different scenarios are listed here and all match up with original results. I tested with 1:2.11+dfsg-1ubuntu7.18~ppa1 .
No migration: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=on: count-cache-flush: hardware assisted flush sequence enabled max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=off: count-cache-flush: full software flush sequence enabled. max-cpu-compat=power9,cap-ibs=broken: count-cache-flush: software flush disabled. First set: Source: max-cpu-compat=power9,cap-ibs=broken Target: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=off Result: worked w/warning: qemu-system-ppc64le: warning: cap-ibs lower level (0) in incoming stream than on destination (1) Source: max-cpu-compat=power9,cap-ibs=broken Target: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=on Result: worked w/warning: qemu-system-ppc64le: warning: cap-ibs lower level (0) in incoming stream than on destination (1) qemu-system-ppc64le: warning: cap-ccf-assist lower level (0) in incoming stream than on destination (1) Source: max-cpu-compat=power9,cap-ibs=broken Target: max-cpu-compat=power9,cap-ibs=broken Result: worked Second set: Source: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=off Target: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=off Result: worked Source: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=off Target: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=on Result: worked w/warning qemu-system-ppc64le: warning: cap-ccf-assist lower level (0) in incoming stream than on destination (1) [ 0.000000] count-cache-flush: full software flush sequence enabled. Source: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=off Target: max-cpu-compat=power9,cap-ibs=broken Result: fail qemu-system-ppc64le: cap-ibs higher level (1) in incoming stream than on destination (0) qemu-system-ppc64le: error while loading state for instance 0x0 of device 'spapr' qemu-system-ppc64le: load of migration failed: Invalid argument Third set: Source: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=on Target: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=on Result: worked count-cache-flush: hardware assisted flush sequence enabled Source: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=on Target: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=off Result: fail qemu-system-ppc64le: cap-ccf-assist higher level (1) in incoming stream than on destination (0) qemu-system-ppc64le: error while loading state for instance 0x0 of device 'spapr' qemu-system-ppc64le: load of migration failed: Invalid argument Source: max-cpu-compat=power9,cap-ibs=workaround,cap-ccf-assist=on Target: max-cpu-compat=power9,cap-ibs=broken Result: fail qemu-system-ppc64le: cap-ibs higher level (1) in incoming stream than on destination (0) qemu-system-ppc64le: cap-ccf-assist higher level (1) in incoming stream than on destination (0) qemu-system-ppc64le: error while loading state for instance 0x0 of device 'spapr' qemu-system-ppc64le: load of migration failed: Invalid argument -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1832622 Title: QEMU - count cache flush Spectre v2 mitigation (CVE) (required for POWER9 DD2.3) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1832622/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
