linux-kernel - Re: [PATCH] VM, x86, PAT: Change implementation of is_linear_pfn

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Date:	Fri, 13 Mar 2009 01:36:54 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
Cc:	Frans Pop <elendil@...net.nl>,
	"thellstrom@...are.com" <thellstrom@...are.com>,
	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	Nick Piggin <npiggin@...e.de>,
	"ebiederm@...ssion.com" <ebiederm@...ssion.com>
Subject: Re: [PATCH] VM, x86, PAT: Change implementation of
	is_linear_pfn_mapping


* Pallipadi, Venkatesh <venkatesh.pallipadi@...el.com> wrote:

> On Thu, 2009-03-12 at 13:30 -0700, Frans Pop wrote:
> > On Thursday 12 March 2009, Pallipadi, Venkatesh wrote:
> > > OK, Looking more at the code, I now understand how the patch from
> > > yday resulted in the oops you saw. Here goes my nth attempt at solving
> > > this problem. Can you please test this patch.
> > 
> > System has been running stable for almost an hour now with pat enabled, so 
> > it looks like the problem is solved.
> > 
> > FYI, with early .29 RCs I had the following when running VirtualBox:
> > kernel: WARNING: at arch/x86/mm/pat.c:620 reserve_pfn_range+0x5b/0x26d()
> > 
> > After be03d9e80220 (which probably fixed that) VirtualBox could no longer 
> > be loaded at all with pat enabled, but with this patch added VirtualBox 
> > runs perfectly again.
> 
> That's great news :-).
> 
> Ingo: considering the history of this patch, can you let this 
> cook in your tree for a week or so and then push towards 
> upstream-git (and .29 stable if .29 is out by then).

Could you please update the commit log with the Reported-by and 
Tested-by tags from Frans, and resend it anew into this thread 
with a changed subject line?

	Ingo
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