From: Peter Zijlstra <peterz@infradead•org>
To: Heiko Carstens <hca@linux•ibm.com>
Cc: Mikhail Zaslonko <zaslonko@linux•ibm.com>,
linux-next@vger•kernel.org, linux-s390@vger•kernel.org,
Ingo Molnar <mingo@kernel•org>,
Alexander Egorenkov <egorenar@linux•ibm.com>,
Thomas Gleixner <tglx@kernel•org>,
"Paul E. McKenney" <paulmck@kernel•org>
Subject: Re: [linux-next][s390] Boot hang after merge c50f05bd3c4e (sched/hrtick)
Date: Fri, 6 Mar 2026 09:41:38 +0100 [thread overview]
Message-ID: <20260306084138.GR1282955@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20260305194821.8663A9e-hca@linux.ibm.com>
On Thu, Mar 05, 2026 at 08:48:21PM +0100, Heiko Carstens wrote:
> Mikhail, which commit did you revert? The above discussion is about commit
> d8b5cf9c6314 ("s390/irq/idle: Remove psw bits early"), which is not
> explicitly mentioned.
>
> But it is indeed broken: irqentry_exit() has a regs_irqs_disabled() check,
> which I broke with this commit - but "only" for idle exit.
> Result: no hrtimer_rearm_deferred() being called on idle exit.
>
> Oh well. Peter, thanks for pointing to this broken commit. Will be reverted.
No problem; digging through unknown arch code is what keeps you sharp
;-)
prev parent reply other threads:[~2026-03-06 8:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-03 18:31 [linux-next][s390] Boot hang after merge c50f05bd3c4e (sched/hrtick) Mikhail Zaslonko
2026-03-04 16:13 ` Mikhail Zaslonko
2026-03-05 7:49 ` Heiko Carstens
2026-03-05 12:12 ` Peter Zijlstra
2026-03-05 12:35 ` Peter Zijlstra
2026-03-05 12:45 ` Peter Zijlstra
2026-03-05 13:07 ` Peter Zijlstra
2026-03-05 15:02 ` Heiko Carstens
2026-03-05 17:24 ` Mikhail Zaslonko
2026-03-05 19:48 ` Heiko Carstens
2026-03-06 8:41 ` Peter Zijlstra [this message]
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