linux-kernel - Re: [PATCH v3 0/2] PCI/aer_inject: Adjust locking for PREEMPT

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Message-ID: <aP-LT-IgxbZMdWNt@2a2a0ba7cec8>
Date: Mon, 27 Oct 2025 15:10:07 +0000
From: Guangbo Cui <jckeep.cuiguangbo@...il.com>
To: Waiman Long <llong@...hat.com>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Clark Williams <clrkwllms@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	linux-rt-devel@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH v3 0/2] PCI/aer_inject: Adjust locking for PREEMPT_RT

On Sun, Oct 26, 2025 at 07:16:36PM -0400, Waiman Long wrote:
> On 10/26/25 12:43 AM, Guangbo Cui wrote:
> > This patch series addresses locking issues in the AER injection
> > path under PREEMPT_RT.
> > 
> > Signed-off-by: Guangbo Cui <jckeep.cuiguangbo@...il.com>
> > ---
> > Changes in v3:
> > - Remove unnecessary lock in aer_inject_exit.
> > - Link to v2: https://lore.kernel.org/all/20251009150651.93618-1-jckeep.cuiguangbo@gmail.com/
> > 
> > ---
> > Guangbo Cui (2):
> >    PCI/aer_inject: Convert inject_lock to raw_spinlock_t
> >    PCI/aer_inject: Remove unnecessary lock in aer_inject_exit
> 
> You should reverse the patch ordering. Patch 2 should come first before the
> patch 1. Otherwise, applying just patch 1 without patch 2 will fail
> compilation.

will fix next version.

Best regards,
Guangbo