From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Chris Friesen <cfriesen@nortel.com>
Cc: linuxppc-dev@ozlabs.org, Csdncannon <csdncannon@gmail.com>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: Continual reading from the PowerPc time base register is not stable
Date: Fri, 26 Mar 2010 09:57:31 +1100 [thread overview]
Message-ID: <1269557851.8599.258.camel@pasglop> (raw)
In-Reply-To: <4BABDD16.4080705@nortel.com>
On Thu, 2010-03-25 at 16:00 -0600, Chris Friesen wrote:
> Shouldn't "upper" be cast to 64-bit before shifting?
Yup but that doesn't explain his results. I think Segher nailed it to a
stuck bit tho, so I would blame defective HW or HW used outside of
normal operating conditions (maybe the TB is sourced out of bounds ?)
Cheers,
Ben.
next prev parent reply other threads:[~2010-03-25 22:57 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-25 2:41 Continual reading from the PowerPc time base register is not stable Csdncannon
2010-03-25 8:21 ` Benjamin Herrenschmidt
2010-03-25 10:05 ` Arnd Bergmann
2010-03-25 15:00 ` Csdncannon
2010-03-25 20:38 ` Benjamin Herrenschmidt
2010-03-26 1:11 ` Csdncannon
2010-03-26 1:22 ` Segher Boessenkool
2010-03-26 2:01 ` Csdncannon
2010-03-26 8:52 ` Segher Boessenkool
2010-03-26 9:01 ` Segher Boessenkool
2010-03-26 12:14 ` Csdncannon
2010-04-06 8:02 ` Csdncannon
2010-03-26 1:55 ` Benjamin Herrenschmidt
2010-03-26 2:04 ` Csdncannon
2010-03-25 22:00 ` Chris Friesen
2010-03-25 22:57 ` Benjamin Herrenschmidt [this message]
2010-03-25 23:37 ` Kumar Gala
2010-03-25 21:37 ` Segher Boessenkool
2010-04-10 3:14 ` Csdncannon
2010-04-22 0:44 ` Kim Phillips
2010-04-22 0:50 ` Benjamin Herrenschmidt
2010-04-22 23:27 ` Kim Phillips
2010-04-23 10:57 ` Csdncannon
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