From: Tejun Heo <tj@kernel.org>
To: Helge Deller <deller@gmx.de>
Cc: Helge Deller <deller@kernel.org>,
Lai Jiangshan <jiangshanlai@gmail.com>,
linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org
Subject: Re: [PATCH][RFC] workqueue: Fix kernel panic on CPU hot-unplug
Date: Mon, 5 Feb 2024 07:45:00 -1000 [thread overview]
Message-ID: <ZcEenNqfJo2lSuNK@slm.duckdns.org> (raw)
In-Reply-To: <12d876ba-a325-4442-9526-3ea9e2117c0b@gmx.de>
Hello,
On Mon, Feb 05, 2024 at 10:58:26AM +0100, Helge Deller wrote:
> It seems the commit 0921244f6f4f ("parisc: Only list existing CPUs in cpu_possible_mask")
> is the culprit. Reverting that patch makes cpu hot-unplug work again.
> Furthermore this commit breaks the cpumask Kunit test as reported by Guenter:
> https://lkml.org/lkml/2024/2/4/146
>
> So, I've added the revert to the parisc git tree and if my further tests
> go well I'll push it upstream.
Yeah, it probably just needs to happen way earlier so that the
cpu_possible_mask doesn't change while the kernel is already half
initialized.
Thanks.
--
tejun
prev parent reply other threads:[~2024-02-05 17:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-31 19:27 [PATCH][RFC] workqueue: Fix kernel panic on CPU hot-unplug Helge Deller
2024-01-31 22:28 ` Tejun Heo
2024-02-01 16:41 ` Helge Deller
2024-02-01 16:54 ` Tejun Heo
2024-02-01 17:56 ` Helge Deller
2024-02-02 1:39 ` Tejun Heo
2024-02-02 8:28 ` Helge Deller
2024-02-02 8:41 ` Helge Deller
2024-02-02 17:29 ` Tejun Heo
2024-02-05 9:58 ` Helge Deller
2024-02-05 17:45 ` Tejun Heo [this message]
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