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Re: [Xen-devel] Stock 2.6.27 kernel hanging on WP test
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Stock 2.6.27 kernel hanging on WP test |
| From: | Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
| Date: | Thu, 08 Oct 2009 15:56:42 -0700 |
| Cc: | Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxx> |
| Delivery-date: | Thu, 08 Oct 2009 15:57:15 -0700 |
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On 10/08/09 15:32, Jeremy Fitzhardinge wrote:
> When I boot Fedora 9 with a stock 2.7.26.25 32-bit-PAE kernel, it's
> hanging forever in the WP test. I'm running current xen-unstable
> 1d7221667204.
>
> Another kernel (I think non-PAE this time) complained that the WP test
> failed (ie, supervisor was allowed to write to a RO page without fault).
>
> The previous version of Xen I tried (only a couple of days ago), crashed
> with "(XEN) Assertion 'v->arch.paging.mode' failed at multi.c:4069" when
> starting the same domain, but I'm not sure if it got to the same point.
>
Oh, I guess I should have pointed out this is an HVM domain. PV is no
problem.
A 64-bit HVM Linux guest seems to die very quickly, but I'm not sure
where its dying (I don't think 64-bit kernels bother testing for WP, so
it could be another crash with the same root cause).
J
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