linux-kernel - Re: [patch 0/7] x86, cpa: cpa related changes to be inline with TLB Application note

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Message-ID: <20080916054424.GB16486@linux-os.sc.intel.com>
Date:	Mon, 15 Sep 2008 22:44:25 -0700
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	"hpa@...or.com" <hpa@...or.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"arjan@...ux.intel.com" <arjan@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: [patch 0/7] x86, cpa: cpa related changes to be inline with TLB Application note

On Sun, Sep 14, 2008 at 09:59:08AM -0700, Ingo Molnar wrote:
> 
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
> > > Signed-off-by: Suresh Siddha <suresh.b.siddha@...el.com>
> >
> > applied to tip/x86/pat, thanks Suresh.
> 
> hm, -tip testing found sporadic lockups on a testbox today:
> 

hmm. Me the culprit :(

There are more places in the kernel which takes pgd_lock using
spin_lock_irqsave() construct. Need to fix all such places
to use spin_lock(). Will fix it and send a more tested patch set
early next week, after I return from the conferences.

thanks,
suresh
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