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Re: [Xen-devel] Re: [Xen-users] Nested Virtualisation question

To: Keir Fraser <keir.xen@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] Nested Virtualisation question
From: Christoph Egger <Christoph.Egger@xxxxxxx>
Date: Thu, 7 Apr 2011 11:09:46 +0200
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "eddie.dong@xxxxxxxxx" <eddie.dong@xxxxxxxxx>, Jeroen Groenewegen van der Weyden <groen692@xxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxx>
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On 04/07/11 09:09, Keir Fraser wrote:
On 07/04/2011 06:36, "Jeroen Groenewegen van der Weyden"
<groen692@xxxxxxxxx>  wrote:

I couldn't help noticing some patches were added in the
/staging/xen-unstable branch. So I gave it a go.

I know it is not called the unstable branch for nothing but, but I want
to let you know that it the entire system crashes when any domain is
xl create someDomain ->  results in immediate system crash

Probably the same as this, happening often in the automated tests:

Apr  7 03:09:18.695893 (XEN) hvm_vcpu_initialise: nestedhvm_vcpu_initialise
returned -95
Apr  7 03:09:18.703835 (XEN) Assertion 'd->arch.paging.hap.total_pages == 0'
failed at hap.c:699
Apr  7 03:09:18.915908 (XEN) Xen call trace:
Apr  7 03:09:18.915950 (XEN)    [<ffff82c48020429f>]
Apr  7 03:09:18.923861 (XEN)    [<ffff82c4801ccb7c>]
Apr  7 03:09:18.923922 (XEN)    [<ffff82c4801584d1>]
Apr  7 03:09:18.935903 (XEN)    [<ffff82c480105287>] domain_kill+0x95/0xe9
Apr  7 03:09:18.943841 (XEN)    [<ffff82c48010324c>] do_domctl+0xd8e/0x1a02
Apr  7 03:09:18.943900 (XEN)    [<ffff82c480212f28>]
Apr  7 03:09:18.955837 (XEN)
Apr  7 03:09:18.955875 (XEN)
Apr  7 03:09:18.955909 (XEN) ****************************************
Apr  7 03:09:18.955961 (XEN) Panic on CPU 7:
Apr  7 03:09:18.956003 (XEN) Assertion 'd->arch.paging.hap.total_pages == 0'
failed at hap.c:699
Apr  7 03:09:18.963863 (XEN) ****************************************

This seems to happen on guest destroy.
Which value has d->arch.paging.hap.total_pages ?


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