[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 06 Jun 2012 16:45:00 +0200
From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
To: Andi Kleen <ak@...ux.intel.com>
Cc: Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
eranian@...gle.com
Subject: Re: [PATCH 5/5] perf, x86: Prefer RDPMC over RDMSR for reading
counters
On Wed, 2012-06-06 at 07:41 -0700, Andi Kleen wrote:
> The reason I avoided it on everyone is that some old chips (NetBurst'ish
> I think) only were able to read the low 32bits through RDPMC.
Can you verify that? Surely Intel still has one of those space heaters
laying about. If so we need to make the P4 driver do something else.
> Ok. I wasn't aware of that. But it's not merged, what happened to ti?
I forgot about it and queued it instead of your patch, so it should be
'out' there soon.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists