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Date: Fri, 6 Mar 2015 10:31:38 -0800
From: Tony Lindgren <tony@atomide.com>
To: Valentin Rothberg <valentinrothberg@gmail.com>
Cc: akpm@linux-foundation.org, Jonathan Corbet <corbet@lwn.net>,
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Subject: Re: [PATCH v2] Remove deprecated IRQF_DISABLED flag entirely
Message-ID: <20150306183137.GZ13520@atomide.com>
References: <1425560442-13367-1-git-send-email-valentinrothberg@gmail.com>
 <1425565425-12604-1-git-send-email-valentinrothberg@gmail.com>
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* Valentin Rothberg <valentinrothberg@gmail.com> [150305 06:24]:
> The IRQF_DISABLED is a NOOP and has been scheduled for removal since
> Linux v2.6.36 by commit 6932bf37bed4 ("genirq: Remove IRQF_DISABLED from
> core code").
> 
> According to commit e58aa3d2d0cc ("genirq: Run irq handlers with
> interrupts disabled") running IRQ handlers with interrupts enabled can
> cause stack overflows when the interrupt line of the issuing device is
> still active.
> 
> This patch ends the grace period for IRQF_DISABLED (i.e., SA_INTERRUPT
> in older versions of Linux) and removes the definition and all remaining
> usages of this flag.
> 
> Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>

Acked-by: Tony Lindgren <tony@atomide.com>