From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Egger <Christoph.Egger@amd.com>
Subject: Re: Re: [Xen-users] Nested Virtualisation question
Date: Thu, 7 Apr 2011 11:09:46 +0200
Message-ID: <4D9D7F5A.8090007@amd.com>
References: <C9C321CC.15F6F%keir.xen@gmail.com>
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To: Keir Fraser <keir.xen@gmail.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, "eddie.dong@intel.com" <eddie.dong@intel.com>, Jeroen Groenewegen van der Weyden <groen692@grosc.com>, Tim Deegan <Tim.Deegan@citrix.com>
List-Id: xen-devel@lists.xenproject.org

On 04/07/11 09:09, Keir Fraser wrote:
> On 07/04/2011 06:36, "Jeroen Groenewegen van der Weyden"
> <groen692@grosc.com>  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
>> created:
>> 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>]
> hap_teardown+0x1a8/0x229
> Apr  7 03:09:18.923861 (XEN)    [<ffff82c4801ccb7c>]
> paging_teardown+0x25/0x135
> Apr  7 03:09:18.923922 (XEN)    [<ffff82c4801584d1>]
> domain_relinquish_resources+0x6b/0x23c
> 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>]
> syscall_enter+0xc8/0x122
> 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 ?

Christoph


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