linux-kernel - Re: [patch V3 00/20] sched: Rewrite MM CID management

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Message-ID: <3f7ec825-7e85-499f-bc44-1fcda0a862ae@linux.ibm.com>
Date: Sat, 1 Nov 2025 13:26:09 +0530
From: Shrikanth Hegde <sshegde@...ux.ibm.com>
To: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
        Gabriele Monaco <gmonaco@...hat.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Michael Jeanson <mjeanson@...icios.com>, Jens Axboe <axboe@...nel.dk>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        "Gautham R. Shenoy" <gautham.shenoy@....com>,
        Florian Weimer <fweimer@...hat.com>, Tim Chen <tim.c.chen@...el.com>,
        Yury Norov <yury.norov@...il.com>
Subject: Re: [patch V3 00/20] sched: Rewrite MM CID management



On 11/1/25 1:06 AM, Thomas Gleixner wrote:
> On Thu, Oct 30 2025 at 12:10, Shrikanth Hegde wrote:
>>> I am running into crash at boot on power10 pseries.
>>> Thought of putting it here first. Me trying to figure out why.
>>>
>>> I am using your tree.
>>> git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git
> 
> Can you update and revalidate? There are a couple of fixes there though
> I don't know how they would be related.

Tried with latest. It boots fine with NR_CPUS=8192.

at commit:
commit 870c1793316eddb6f8c9814f830f237e6e1c40ee (origin/rseq/cid)
Author: Thomas Gleixner <tglx@...utronix.de>
Date:   Tue Oct 14 10:51:04 2025 +0200

     sched/mmcid: Switch over to the new mechanism