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

[Andy Smith <andy@xxxxxxxxxxxxxx>]

Hi,

On Mon, Jul 22, 2019 at 01:06:03PM +0100, Andrew Cooper wrote:
> On 22/07/2019 10:16, Jan Beulich wrote:
> > On 21.07.2019 22:06, Andy Smith wrote:
> >> (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...

[…]

> Does reverting back to credit1 make the issue go away?

Yes, I don't see this with sched=credit, smt=0 and SMT enabled in
the BIOS:

(XEN) microcode: CPU2 updated from revision 0x2000057 to 0x200005e, date = 
2019-04-02 
(XEN) microcode: CPU4 updated from revision 0x2000057 to 0x200005e, date = 
2019-04-02 
(XEN) microcode: CPU6 updated from revision 0x2000057 to 0x200005e, date = 
2019-04-02 
(XEN) microcode: CPU8 updated from revision 0x2000057 to 0x200005e, date = 
2019-04-02 
(XEN) microcode: CPU10 updated from revision 0x2000057 to 0x200005e, date = 
2019-04-02 
(XEN) microcode: CPU12 updated from revision 0x2000057 to 0x200005e, date = 
2019-04-02 
(XEN) microcode: CPU14 updated from revision 0x2000057 to 0x200005e, date = 
2019-04-02 
(XEN) Brought up 8 CPUs
(XEN) Parked 8 CPUs

Thanks,
Andy

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