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[Xen-devel] "CPU N still not dead..." messages during microcode update stage of boot when smt=0

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>

From: Andy Smith <andy@xxxxxxxxxxxxxx>

Date: Sun, 21 Jul 2019 20:06:23 +0000

Delivery-date: Sun, 21 Jul 2019 20:06:28 +0000

List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

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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. Cheers, Andy _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel

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