linux-kernel - Re: [PATCH 8/9] powerpc: Add HOTPLUG

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Message-ID: <87cz207i72.ffs@tglx>
Date:   Mon, 12 Jun 2023 18:34:41 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Laurent Dufour <ldufour@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        linux-kernel@...r.kernel.org
Cc:     linux-arch@...r.kernel.org, dave.hansen@...ux.intel.com,
        x86@...nel.org, mingo@...hat.com, bp@...en8.de,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 8/9] powerpc: Add HOTPLUG_SMT support

On Mon, Jun 12 2023 at 17:20, Laurent Dufour wrote:
> On 10/06/2023 23:10:02, Thomas Gleixner wrote:
>> This needs more thoughts to avoid a completely inconsistent duct tape
>> mess.
>
> Despite the test against smt_enabled_at_boot, mentioned above, I can't see
> anything else to rework. Am I missing something?

See my comments on the core code changes.

>> Btw, the command line parser and the variable smt_enabled_at_boot being
>> type int allow negative number of threads too... Maybe not what you want.
>
> I do agree, it should an unsigned type.

I assume you'll fix that yourself. :)

Thanks,

        tglx