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From: Ingo Molnar <mingo@elte.hu>
To: Cliff Wickman <cpw@sgi.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 6 of 6] x86, UV: correct UV2 BAU destination timeout
Date: Wed, 15 Jun 2011 09:43:19 +0200	[thread overview]
Message-ID: <20110615074319.GC3538@elte.hu> (raw)
In-Reply-To: <E1QWchi-0004Ng-1i@eag09.americas.sgi.com>


* Cliff Wickman <cpw@sgi.com> wrote:

> From: Cliff Wickman <cpw@sgi.com>
> 
> Correct the UV2 broacast assist unit's destination timeout period.
>   The period is set in 4 bits of memory-mapped register MISC_CONTROL.
>   The left bit toggles base period between 10us and 80us.
>   The other 3 bits are the multiplier.
> Decimal 15, hex f, gives the maximum: 7 * 80us
> 
> And the activation status register in UV2 should be tested for a destination
> timeout with a 4, not a 2.  The values for Active versus Timeout were reversed.

This changelog tells us everything except what a user of this code 
would be most interested in: what was the practical effect of the 
bug, how badly does the user want the fix?

Thanks,

	Ingo

      reply	other threads:[~2011-06-15  7:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-14 23:07 Cliff Wickman
2011-06-15  7:43 ` Ingo Molnar [this message]

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