Re: [Xen-devel] [PATCH 1/1 V3] x86/AMD: Fix nested svm crash due to assertion in __virt_to_maddr

["Egger, Christoph" <chegger@xxxxxxxxx>]

On 17.07.13 21:43, Tim Deegan wrote:
>> I'm not clear about the need for this new wrapper: Is it really
>> benign to the caller what type, access, and order get returned
>> here? Is it really too much of a burden to have the two call
>> sites do the call here directly? The more that (see above) you'd
>> really need to give the caller control over the access requested?
> 
> Yeah, I'm not sure the wrapper is needed.  Can the callers just use
> get_page_from_gfn() to do the translation from guest-MFN -- i.e. will we
> always be in non-nested mode when we're emulating VMLOAD/VMSAVE?

When you run an L2 hypervisor then you are in nested mode.

Christoph


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