[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] xen.git branch reorg / crash with 2.6.30-rc3 pv_ops dom0
On Wed, Apr 29, 2009 at 09:25:24AM -0700, Jeremy Fitzhardinge wrote: > > > There was some unification work in this area around the > >beginning of March although I'm pretty such I've had it work much more > >recently. (I guess it might not have been merged into a visible branch > >until more recently, it's a bit hard to tell with git but I don't think > >that's what happened). > > Yeah, I think it has been working properly for some since then, though I > think Pasi has been reporting problems since 32-bit dom0 first booted. > Yep, I've had problems from the beginning.. dom0/hackery was working pretty OK for me before it was removed.. I could run and install new PV guests etc. > My symptoms are a bit all over the place. For a while I was just seeing > writes-to-RO pages, but since I added some debugging to try and work out > where that was happening, I'm now seeing more major pagetable corruption > (like instruction fetches failing because of reserved bits being set in > the pagetable...). So something is stomping pagetable, and I think its > some page being freed. > > I think these are somewhat similar to Pasi's symptoms which he said that > disabling HIGHPTE fixed. I see problems independent of the HIGHPTE > setting. > CONFIG_HIGHPTE=n fixed my "dom0 kernel crashes while compiling kernel source in dom0" test.. could be the problem still happens with some other tests though.. > I have best success in causing crashes when scp'ing a 8GB file onto my > XFS /home filesystem. XFS does quite a lot of vmapping, so that may > exacerbate the problem. > I could try scp aswell.. > I also realized that my Xen doesn't have debug=y set, so I'm probably > missing some information. > Hmm, good point. I don't have debug=y either.. -- Pasi _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |