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From:   Michael Ellerman <patch-notifications@ellerman.id.au>
To:     linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        Valentin Schneider <valentin.schneider@arm.com>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Paul Mackerras <paulus@samba.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Ingo Molnar <mingo@kernel.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Bharata B Rao <bharata@linux.ibm.com>
In-Reply-To: <20210707183831.2106509-1-valentin.schneider@arm.com>
References: <20210707183831.2106509-1-valentin.schneider@arm.com>
Subject: Re: [PATCH] powerpc: preempt: Don't touch the idle task's preempt_count during hotplug
Message-Id: <162575242118.20406.3966849452752169600.b4-ty@ellerman.id.au>
Date:   Thu, 08 Jul 2021 23:53:41 +1000
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On Wed, 7 Jul 2021 19:38:31 +0100, Valentin Schneider wrote:
> Powerpc currently resets a CPU's idle task preempt_count to 0 before said
> task starts executing the secondary startup routine (and becomes an idle
> task proper).
> 
> This conflicts with commit
> 
>   f1a0a376ca0c ("sched/core: Initialize the idle task with preemption disabled")
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc: preempt: Don't touch the idle task's preempt_count during hotplug
      https://git.kernel.org/powerpc/c/2c669ef6979c370f98d4b876e54f19613c81e075

cheers