linux-kernel - Re: [PATCH 2.6.21-rt7] PowerPC: fix clockevents for classic CPUs

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Message-Id: <1d767eeda7a427230eb320edbb6784c7@kernel.crashing.org>
Date:	Thu, 24 May 2007 21:10:15 +0200
From:	Segher Boessenkool <segher@...nel.crashing.org>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
Cc:	linuxppc-dev@...abs.org, mingo@...e.hu,
	linux-kernel@...r.kernel.org, tglx@...utronix.de
Subject: Re: [PATCH 2.6.21-rt7] PowerPC: fix clockevents for classic CPUs

>  	 * We must write a positive value to the decrementer to clear
> -	 * the interrupt on the IBM 970 CPU series.  In periodic mode,
> -	 * this happens when the decrementer gets reloaded later, but
> -	 * in one-shot mode, we have to do it here since an event handler
> -	 * may skip loading the new value...
> +	 * the interrupt on POWER4+ compatible CPUs.

No, it is *not* only on POWER4+ compatible CPUs.  Sigh.


Segher

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