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From: Nick Piggin <npiggin@suse.de>
To: Glauber Costa <glommer@redhat.com>
Cc: Avi Kivity <avi@redhat.com>,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	aliguori@codemonkey.ws, Jeremy Fitzhardinge <jeremy@goop.org>,
	Krzysztof Helt <krzysztof.h1@poczta.fm>
Subject: Re: [PATCH] regression: vmalloc easily fail.
Date: Thu, 30 Oct 2008 02:53:35 +0100	[thread overview]
Message-ID: <20081030015335.GA18041@wotan.suse.de> (raw)
In-Reply-To: <20081029220737.GF11532@poweredge.glommer>

On Wed, Oct 29, 2008 at 08:07:37PM -0200, Glauber Costa wrote:
> On Wed, Oct 29, 2008 at 11:43:33AM +0100, Nick Piggin wrote:
> > On Wed, Oct 29, 2008 at 12:29:40PM +0200, Avi Kivity wrote:
> > > Nick Piggin wrote:
> > > >Hmm, spanning <30MB of memory... how much vmalloc space do you have?
> > > >
> > > >  
> > > 
> > > From the original report:
> > > 
> > > >VmallocTotal:     122880 kB
> > > >VmallocUsed:       15184 kB
> > > >VmallocChunk:      83764 kB
> > > 
> > > So it seems there's quite a bit of free space.
> > > 
> > > Chunk is the largest free contiguous region, right?  If so, it seems the 
> > 
> > Yes.
> > 
> > 
> > > problem is unrelated to guard pages, instead the search isn't finding a 
> > > 1-page area (with two guard pages) for some reason, even though lots of 
> > > free space is available.
> > 
> > Hmm. The free area search could be buggy...
> Do you want me to grab any specific info of it? Or should I just hack myself
> randomly into it? I'll probably have some time for that tomorrow.

I can take a look at it, in the next day or two. If you hack at it, and
find the problem I wouldn't be upset ;)

  reply	other threads:[~2008-10-30  1:53 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-28 22:55 Glauber Costa
2008-10-28 21:03 ` Avi Kivity
2008-10-28 21:09   ` Glauber Costa
2008-10-28 21:22     ` Matias Zabaljauregui
2008-10-28 21:22   ` Roland Dreier
2008-10-28 21:42     ` Arjan van de Ven
2008-10-28 22:03       ` Roland Dreier
2008-10-28 23:29 ` Nick Piggin
2008-10-29  6:28   ` Avi Kivity
2008-10-29  9:48   ` Glauber Costa
2008-10-29 10:11     ` Nick Piggin
2008-10-29 10:29       ` Avi Kivity
2008-10-29 10:43         ` Nick Piggin
2008-10-29 22:07           ` Glauber Costa
2008-10-30  1:53             ` Nick Piggin [this message]
2008-10-30  4:49             ` Nick Piggin
2008-10-30 11:28               ` Glauber Costa
2008-10-31  7:16                 ` Nick Piggin
2008-11-04 17:51                   ` Glauber Costa
2008-11-05  0:21                   ` Glauber Costa
2008-10-30 16:46               ` Matt Mackall
2008-10-30 18:04                 ` Glauber Costa
2008-10-31  2:59                   ` Nick Piggin
2008-11-07 20:37               ` Glauber Costa

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