On 21.07.2019 22:06, Andy Smith wrote: > Hi, > > My first time using smt=0 on hypervisor command line so not sure how > many versions and different pieces of hardware this happens with, > but I noticed this during the microcode update stage of boot: > > (XEN) HVM: HAP page sizes: 4kB, 2MB, 1GB > (XEN) Adding cpu 1 to runqueue 0 > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) CPU 1 still not dead... > (XEN) Removing cpu 1 from runqueue 0 > (XEN) microcode: CPU2 updated from revision 0x2000057 to 0x200005e, date = > 2019-04-02 > (XEN) Adding cpu 2 to runqueue 0 > (XEN) Adding cpu 3 to runqueue 0 > (XEN) Removing cpu 3 from runqueue 0 > (XEN) microcode: CPU4 updated from revision 0x2000057 to 0x200005e, date = > 2019-04-02 > (XEN) Adding cpu 4 to runqueue 0 > (XEN) Adding cpu 5 to runqueue 0 > (XEN) Removing cpu 5 from runqueue 0 > (XEN) microcode: CPU6 updated from revision 0x2000057 to 0x200005e, date = > 2019-04-02 > (XEN) Adding cpu 6 to runqueue 0 > (XEN) Adding cpu 7 to runqueue 0 > (XEN) Removing cpu 7 from runqueue 0 > (XEN) microcode: CPU8 updated from revision 0x2000057 to 0x200005e, date = > 2019-04-02 > (XEN) Adding cpu 8 to runqueue 0 > (XEN) Adding cpu 9 to runqueue 0 > (XEN) Removing cpu 9 from runqueue 0 > (XEN) microcode: CPU10 updated from revision 0x2000057 to 0x200005e, date = > 2019-04-02 > (XEN) Adding cpu 10 to runqueue 0 > (XEN) Adding cpu 11 to runqueue 0 > (XEN) Removing cpu 11 from runqueue 0 > (XEN) microcode: CPU12 updated from revision 0x2000057 to 0x200005e, date = > 2019-04-02 > (XEN) Adding cpu 12 to runqueue 0 > (XEN) Adding cpu 13 to runqueue 0 > (XEN) Removing cpu 13 from runqueue 0 > (XEN) microcode: CPU14 updated from revision 0x2000057 to 0x200005e, date = > 2019-04-02 > (XEN) Adding cpu 14 to runqueue 0 > (XEN) Adding cpu 15 to runqueue 0 > (XEN) Removing cpu 15 from runqueue 0 > (XEN) Brought up 8 CPUs > (XEN) Parked 8 CPUs > > It doesn't happen with smt=1 and it also doesn't happen when SMT is > disabled in the BIOS. > > Boot does continue normally after this point. > > Is this expected? 4.12.
"Expected" isn't the right word. I've noticed this too on one or two occasions, and I can't (yet) explain what's going on there, the more that so far (including your report) this is only ever for the first CPU to get re-offlined. Something to be looked into as time permits. Jan _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
