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From: Andy Smith <andy@strugglers.net>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>,
	Jan Beulich <JBeulich@suse.com>
Subject: Re: [Xen-devel] "CPU N still not dead..." messages during microcode update stage of boot when smt=0
Date: Fri, 2 Aug 2019 02:15:29 +0000	[thread overview]
Message-ID: <20190802021529.GR12975@bitfolk.com> (raw)
In-Reply-To: <c33f310d-7956-ba59-7df7-1cdc66aa1979@citrix.com>

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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  parent reply	other threads:[~2019-08-02  2:15 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-21 20:06 [Xen-devel] "CPU N still not dead..." messages during microcode update stage of boot when smt=0 Andy Smith
2019-07-22  9:16 ` Jan Beulich
2019-07-22 12:06   ` Andrew Cooper
2019-07-22 12:18     ` Jan Beulich
2019-07-22 12:55       ` Juergen Gross
2019-08-02  2:15     ` Andy Smith [this message]
2019-08-02  4:51       ` Juergen Gross
2019-08-02 10:13         ` Andrew Cooper

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