linux-kernel - Re: [PATCH] pci/aer_inject: switching inject_lock to raw_spinlock

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Message-ID: <aOXeGFJLuMsPqAjw@2a2a0ba7cec8>
Date: Wed, 8 Oct 2025 03:44:24 +0000
From: Guangbo Cui <jckeep.cuiguangbo@...il.com>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Waiman Long <llong@...hat.com>, 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>, linux-rt-devel@...ts.linux.dev,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH] pci/aer_inject: switching inject_lock to raw_spinlock_t

On Tue, Oct 07, 2025 at 06:12:29PM +0200, Sebastian Andrzej Siewior wrote:
> On 2025-10-08 00:10:45 [+0800], guangbo cui wrote:
> > As mentioned above, the list is usually short in typical use cases,
> > since error injection is mainly used for debugging or development
> > purposes. Perhaps we can also get some advice from the PCI folks.
> 
> Is this something that is used in "production" or more debugging/
> development?

It's mainly for debugging/development. Debugging AER code is difficult
cause it's hard to trigger real hardware errors.

Best regards,
Guangbo