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xen-devel
Re: [Xen-devel] xenpaging crashes xen in is_iomem_page()
On 27 July 2010 14:25, Olaf Hering <olaf@xxxxxxxxx> wrote:
> On Tue, Jul 27, Patrick Colp wrote:
>
>> I pulled the latest version of Xen (revision 21859) and ran it on my
>> EPT box and then ran xenpaging and it's working fine for me.
>
> Good to hear.
>
>> Have you tried paging more than just 1 page? Not sure why that should
>> make a difference, but it's worth trying. Also, do you have any
>> modifications/patches applied to your tree that aren't part of
>> xen-unstable? Is the guest you're attempting to run xenpaging on an
>> HVM guest?
>
> Other values lead to different crashes. I have no more modifications,
> beside the submitted patches to runlevel scripts.
>
> Its not a HVM guest, I will try that right now.
Ah, that would probably be why. Just to clarify, it only works for
64-bit Xen on HVM guests which are using EPT.
> xenpaging has some pitfalls it seems.
The lack of warning when trying to use xenpaging on non-EPT guests is
an issue. I'm currently working on the fix.
Patrick
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