On Fri, Oct 31, 2008 at 08:16:44AM +0100, Nick Piggin wrote: > On Thu, Oct 30, 2008 at 09:28:54AM -0200, Glauber Costa wrote: > > On Thu, Oct 30, 2008 at 05:49:41AM +0100, Nick Piggin wrote: > > > 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 took a bit of a look. Does this help you at all? > > > > > > I still think we should get rid of the guard pages in non-debug kernels > > > completely, but hopefully this will fix your problems? > > unfortunately, it doesn't. > > problem still happen in a kernel with this patch. > > That's weird. Any chance you could dump a list of all the vmap area start > and end adresses and their flags before returning failure?
I said it worked with a single change. Shame on me, I was testing the wrong kernel it does not work at all. I'll debug it more tomorrow. > > > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
