linux-kernel - Re: [patch 00/29] x86/cpu: Rework the topology evaluation

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Message-ID: <545cff6e-09ad-afc3-5d5f-bf5a435885b9@intel.com>
Date:   Wed, 26 Jul 2023 15:15:10 -0700
From:   Sohil Mehta <sohil.mehta@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>
CC:     <x86@...nel.org>, Tom Lendacky <thomas.lendacky@....com>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Dick Kennedy <dick.kennedy@...adcom.com>,
        James Smart <james.smart@...adcom.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        <linux-scsi@...r.kernel.org>, <linux-hwmon@...r.kernel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Huang Rui <ray.huang@....com>,
        Guenter Roeck <linux@...ck-us.net>,
        Steve Wahl <steve.wahl@....com>,
        Mike Travis <mike.travis@....com>,
        Dimitri Sivanich <dimitri.sivanich@....com>,
        Russ Anderson <russ.anderson@....com>
Subject: Re: [patch 00/29] x86/cpu: Rework the topology evaluation

On 7/24/2023 10:43 AM, Thomas Gleixner wrote:
> The series is based on the APIC cleanup series:
> 
>   https://lore.kernel.org/lkml/20230724131206.500814398@linutronix.de
> 
> and also available on top of that from git:
> 
>  git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git topo-cpuid-v1
> 

The series boots fine on an old Sandy Bridge 2S system. There is a print
from topology_update_die_map() which is missing from dmesg but it seems
mostly harmless.

> [    0.085686] smpboot: x86: Booting SMP configuration:> [    0.085690] .... node  #0, CPUs:          #1   #2   #3   #4   #5
#6   #7   #8   #9
> [    0.089253] .... node  #1, CPUs:    #10  #11  #12  #13  #14  #15  #16  #17  #18  #19
> [    0.000000] smpboot: CPU 10 Converting physical 0 to logical die 1

 ^^ The "Converting physical..." line doesn't show up with the patches
applied.

> [    0.134035] .... node  #0, CPUs:    #20  #21  #22  #23  #24  #25  #26  #27  #28  #29
> [    0.140239] .... node  #1, CPUs:    #30  #31  #32  #33  #34  #35  #36  #37  #38  #39

Please let me know if you need more information.

Tested-by: Sohil Mehta <sohil.mehta@...el.com>