Re: [Xen-devel] Xen4.2 S3 regression?

[Ben Guthro <ben@xxxxxxxxxx>]

On Thu, Sep 27, 2012 at 3:38 AM, Jan Beulich <JBeulich@xxxxxxxx> wrote:

> [   37.420030] PM: Restoring platform NVS memory
> (XEN) microcode: collect_cpu_info for CPU0
> (XEN) microcode: collect_cpu_info : sig=0x10676, pf=0x80, rev=0x60c
> (XEN) microcode: collect_cpu_info for CPU1
> (XEN) microcode: collect_cpu_info : sig=0x10676, pf=0x80, rev=0x60f

And in the end we see that both cores run on different revisions.

very interesting. I had overlooked that. 

 

The mixup of Xen and Dom0 messages puzzles me too - in my
understanding, all APs should be brought back up before
domains get unpaused. Is that perhaps part of your problem
with pinned vCPU-s? Or is the mixup not indicative of things
actually happening in parallel?

It seems like it may be related, but I'm unsure how.

When I run without the dom0_vcpu_pin option, I don't see the collect_cpu_info messages, 

nor do I see the microcode revision printout for CPU0

nor do I see the dom0 / Xen messages mised up.

[   41.567458] ACPI: Preparing to enter system sleep state S3

[   42.020120] PM: Saving platform NVS memory

[   42.092643] Disabling non-boot CPUs ...

(XEN) Preparing system for ACPI S3 state.

(XEN) Disabling non-boot CPUs ...

(XEN) Entering ACPI S3 state.

(XEN) mce_intel.c:1239: MCA Capability: BCAST 1 SER 0 CMCI 0 firstbank 1 extended MCE MSR 0

(XEN) CMCI: CPU0 has no CMCI support

(XEN) CPU0: Thermal monitoring enabled (TM2)

(XEN) Finishing wakeup from ACPI S3 state.

(XEN) Enabling non-boot CPUs  ...

(XEN) Booting processor 1/1 eip 8a000

(XEN) Initializing CPU#1

(XEN) CPU: L1 I cache: 32K, L1 D cache: 32K

(XEN) CPU: L2 cache: 3072K

(XEN) CPU: Physical Processor ID: 0

(XEN) CPU: Processor Core ID: 1

(XEN) CMCI: CPU1 has no CMCI support

(XEN) CPU1: Thermal monitoring enabled (TM2)

(XEN) CPU1: Intel(R) Core(TM)2 Duo CPU     P8400  @ 2.26GHz stepping 06

(XEN) microcode: CPU1 updated from revision 0x60c to 0x60f, date = 2010-09-29 

[   42.200055] ACPI: Low-level resume complete

[   42.200055] PM: Restoring platform NVS memory

[   42.200055] Enabling non-boot CPUs ...

Any pointers are appreciated.

/btg

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