From: Chris Wilson <chris@chris-wilson.co.uk>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org, "Siddha,
Suresh B" <suresh.b.siddha@intel.com>,
Venkatesh Pallipadi <venki@google.com>
Subject: Re: Loss of PAT-WC after resume on i5
Date: Mon, 03 Jan 2011 16:21:09 +0000 [thread overview]
Message-ID: <1bdc18$j527vf@fmsmga002.fm.intel.com> (raw)
In-Reply-To: <4D21F2C1.30500@zytor.com>
On Mon, 03 Jan 2011 08:01:05 -0800, "H. Peter Anvin" <hpa@zytor.com> wrote:
> Sounds like it. It sounds based on your description that it's something
> more fundamental than just the state of the PAT MSR being lost, too,
> although perhaps that's the first thing to check...
Right, I should have mentioned that a rdmsr(MSR_ISA32_CR_PAT) showed no
change across a dysfunctional resume. And that
/sys/kernel/debug/x86/pat_memtype_list had the same contents (just the
first entries reversed upon resume).
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
next prev parent reply other threads:[~2011-01-03 16:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <849307$b076ne@azsmga001.ch.intel.com>
2011-01-03 16:01 ` Loss of PAT-WC after resume on i5 H. Peter Anvin
2011-01-03 16:21 ` Chris Wilson [this message]
2011-01-03 17:29 ` H. Peter Anvin
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